Thank you, Derrick, for one of our favorite days at Yellowstone! Derrick took us to several "off the beaten path" sites for walking trails to see gorgeous falls, amazing river views, hot springs and geisers, all the while looking out for our safety("YO, BEAR!") and comfort. Trails were not overly-strenuous(all of us in our 60's and living at sea level) and he even got us started on a couple, then went back and picked us up at the end so we would not have to double back.
A lovely picnic lunch, surprise wildlife encounter(3 bison took a shortcut through the picnic area surprising everyone!), and a wealth of knowledge and entertaining facts made this a satisfying day.