Les meilleurs événements de la ville Yellowstone ouest. Visite privée d'une journée VIP de Yellowstone Lower Loop avec déjeuner commander (réserver en ligne) tickets.afisha.life. Leave the hassle of planning to us and allow us to provide you a tour filled with rich history of the first National Park in the world

1

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

2

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

3

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

4

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

5

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

6

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

7

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

8

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

9

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

10

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

11

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

12

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

13

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

14

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

15

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

16

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

17

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

18

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

19

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

20

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

21

Firehole Canyon Drive

Firehole Canyon Drive est une route à sens unique de 3 km au large de Grand Loop au sud de Madison. La route a une vue sur la cascade et une zone de baignade.

22

Bassin de geyser de Norris

Norris Geyser Basin est la zone thermale la plus chaude et la plus changeante de Yellowstone. Nous explorerons de nombreuses caractéristiques que vous verriez si vous parcouriez les 2 1/4 milles (3,6 km) de sentiers. Découvrez l'emplacement du geyser actif le plus haut du monde, des sources chaudes colorées et de la vie microscopique dans l'un des environnements les plus extrêmes de la planète.

23

Chutes Gibbons

Gibbon Falls chute de 84 pieds (0,3 m) sur un vestige du bord de la caldeira de Yellowstone. La caldeira a été créée par une éruption volcanique massive il y a environ 640 000 ans. Un arrêt rapide sur notre lecteur de la boucle inférieure, c'est une belle occasion pour un moment photo.

24

Vieux fidèle

Old Faithful est situé dans le bassin Upper Geyser de Yellowstone, dans la partie sud-ouest du parc. La zone d'observation des geysers est la plus accessible et la plus conviviale du parc avec des bancs, un grand parking et un poste de garde forestier qui suit l'heure, la hauteur et la durée d'une éruption pour prédire la prochaine éruption.

25

Pot de peinture fontaine

Le long du sentier Fountain Paint Pot, vous verrez diverses caractéristiques hydrothermales qui sont des expressions du volcan encore actif de Yellowstone. Au sein de ce système géologique, chaque type de caractéristique thermique est représenté. Ils peuvent être regroupés en deux catégories générales : ceux qui ont beaucoup d'eau (sources chaudes et geysers) et ceux qui ont peu d'eau (mudpots et fumerolles). Malgré leurs similitudes structurelles, il n'y a pas deux caractéristiques identiques.

26

Grand ressort prismatique

Grand Prismatic Spring est situé dans le Midway Geyser Basin. Elle a la particularité d'être la plus grande source chaude du parc. Il mesure environ 370 pieds (112,8 m) de diamètre et plus de 121 pieds (37 m) de profondeur. Une description de cette source par le trappeur de fourrures Osborne Russell en 1839 en fait également la première caractéristique thermique décrite à Yellowstone qui est définitivement identifiable.

27

Lac Yellowstone

Situé à 7 733 pieds (2 357 m) au-dessus du niveau de la mer, le lac Yellowstone est le plus grand lac de haute altitude (au-dessus de 7 000 pieds /2 134 m) en Amérique du Nord. Il mesure environ 20 miles (32,2 km) de long et 14 miles (22,5 km) de large, avec 141 miles (227 km) de rivage et une superficie de 132 miles carrés (342 km2). Le lac Yellowstone gèle complètement chaque hiver fin décembre ou début janvier, avec des épaisseurs de glace variant de quelques centimètres à plus de deux pieds. Le lac dégèle généralement fin mai ou début juin. Le lac Yellowstone reste froid toute l'année, avec une température moyenne de l'eau de 41 ° F (5 ° C). En raison de l'eau extrêmement froide, la baignade n'est pas recommandée. Le temps de survie est estimé à seulement 20 à 30 minutes dans l'eau à cette température.

28

Geysers de Yellowstone - Zone du volcan de boue

Yellowstone lui-même est un volcan, et l'une de ses éruptions les plus spectaculaires s'est produite il y a 640 000 ans. Au cours de l'éruption, la terre s'est effondrée et a laissé une grande dépression dans la terre, la caldeira de Yellowstone. Cette caldeira remplie de lave coule sur des centaines et des milliers d'années créant le plateau volcanique qui comprend une grande partie de la partie centrale du parc. Ici, à Mud Volcano, vous êtes à proximité de l'un des dômes renaissants. Les collines que vous voyez à l'est d'ici comprennent Sour Creek Dome. Les dômes résurgents sont des zones de déformation active du sol, où la terre se déplace vers le haut ou vers le bas avec la fluctuation de la chambre magmatique en dessous. Les scientifiques surveillent ces dômes de près pour obtenir des informations sur l'activité volcanique en cours. Sans surprise, de nombreux geysers, sources chaudes, mudpots et fumerolles du parc se trouvent également à proximité ou dans la caldeira.

29

Grand Canyon du Yellowstone

Le Grand Canyon de la rivière Yellowstone exprime l'histoire géologique complexe du parc dans des couleurs et des formes spectaculaires. Des bouffées de vapeur marquent des caractéristiques hydrothermales dans les parois du canyon. Les chutes supérieures et inférieures de la rivière Yellowstone ajoutent à la grandeur de ce trésor naturel unique.

30

Vallée de Hayden

Hayden Valley est une grande vallée subalpine du parc national de Yellowstone qui chevauche la rivière Yellowstone entre les chutes Yellowstone et le lac Yellowstone. Le fond de la vallée le long de la rivière est un ancien lit de lac datant d'une époque où le lac Yellowstone était beaucoup plus grand.

31

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

32

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

33

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

34

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

35

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

36

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

37

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

38

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

39

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

40

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

41

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

42

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

43

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

44

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

45

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

46

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

47

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

48

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

49

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

50

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

51

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

52

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

53

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

54

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

55

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

56

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

57

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

58

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

59

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

60

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

61

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

62

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

63

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

64

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

65

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

66

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

67

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

68

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

69

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

70

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

71

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

72

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

73

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

74

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

75

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

76

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

77

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

78

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

79

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

80

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

81

Firehole Canyon Drive

Firehole Canyon Drive is a 2-mile, one-way road off the Grand Loop south of Madison. The drive has a waterfall overlook and swimming area.

82

Norris Geyser Basin

Norris Geyser Basin is the hottest and most changeable thermal area in Yellowstone. We will explore many of the features you would see if you walked the 2 1/4 miles (3.6 km) of trails. Discover the location of the world's tallest active geyser, colorful hot springs, and microscopic life in one of the most extreme environments on earth.

83

Gibbon Falls

Gibbon Falls drops 84 feet (0.3 m) over a remnant of the Yellowstone caldera rim. The caldera was created by a massive volcanic eruption approximately 640,000 years ago. A quick stop on our drive of the lower loop, this is a great opportunity for a photo moment.

84

Old Faithful

Old Faithful is located in Yellowstone’s Upper Geyser Basin in the southwest section of the park. The geyser-viewing area is the most accessible and visitor-friendly in the park with bench seating, a large parking lot, and a ranger station that tracks the time, height and length of an eruption to predict the next eruption.

85

Fountain Paint Pot

Along Fountain Paint Pot Trail you will see various hydrothermal features that are expressions of Yellowstone’s still active volcano. Within this geologic system, each type of thermal feature is represented. They can be grouped into two general categories—those with a great deal of water (hot springs and geysers) and those with limited water (mudpots and fumaroles). Despite their structural similarities, no two features are exactly alike.

86

Grand Prismatic Spring

Grand Prismatic Spring is located in the Midway Geyser Basin. It has the distinction of being the park's largest hot spring. It measures approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m ) deep. A description of this spring by fur trapper Osborne Russell in 1839 also makes it the earliest described thermal feature in Yellowstone that is definitely identifiable.

87

Yellowstone Lake

Situated at 7,733 feet (2,357 m) above sea level, Yellowstone Lake is the largest high elevation lake (above 7,000 feet / 2,134 m) in North America. It is roughly 20 miles (32.2 km) long and 14 miles (22.5 km) wide, with 141 miles (227 km) of shoreline and a surface area of 132 square miles (342 km2). Yellowstone Lake freezes over completely every winter in late December or early January, with ice thicknesses varying from a few inches to more than two feet. The lake usually thaws in late May or early June. Yellowstone Lake remains cold year-round, with an average water temperature of 41°F (5°C). Because of the extremely cold water, swimming is not recommended. Survival time is estimated to be only 20 to 30 minutes in water at this temperature.

88

Yellowstone Geysers - Mud Volcano Area

Yellowstone itself is a volcano, and one of its most spectacular eruptions occurred 640,000 years ago. During the eruption, the land collapsed and left a large depression in the earth—the Yellowstone Caldera. This caldera filled with lava flows over hundreds and thousands of years creating the volcanic plateau that comprises much of the central part of the park. Here at Mud Volcano you are close to one of the resurgent domes. The hills you see east of here comprise Sour Creek Dome. Resurgent domes are areas of active ground deformation, where the land moves up or down with the fluctuation of the magma chamber below. Scientists monitor these domes closely for information about ongoing volcanic activity. Not surprisingly, many of the park’s geysers, hot springs, mudpots, and fumaroles are also found near or within the caldera.

89

Grand Canyon of the Yellowstone

The Grand Canyon of the Yellowstone River expresses the park's complex geologic history in dramatic colors and shapes. Puffs of steam mark hydrothermal features in the canyon's walls. The Upper and Lower Falls of the Yellowstone River add to the grandeur of the unique natural treasure.

90

Hayden Valley

Hayden Valley is a large, sub-alpine valley in Yellowstone National Park straddling the Yellowstone River between Yellowstone Falls and Yellowstone Lake. The valley floor along the river is an ancient lake bed from a time when Yellowstone Lake was much larger.

Visite privée d'une journée VIP de Yellowstone Lower Loop avec déjeuner

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