I highly recommend this private tour of Yellowstone National Park! Dennis was an incredibly knowledgeable and entertaining guide for our day in Yellowstone!! He showed us the beautiful highlights of Yellowstone: the geyser basin, Old Faithful, Grand Canyon of Yellowstone, etc, but also gave us opportunities to stop at whatever sites interested us as well!! It was clear that Dennis loved the national parks and showing his guests the beauty and majesty that is Yellowstone National Park!! Thank you, Dennis, for accommodating us on short notice and providing a day of highlights for our short trip out West!! We didn't realize how much we needed to be immersed in the grandeur of nature's beauty and majesty!