Hayden Valley
Yellowstone National Park, Yellowstone National Park, WYAbout
The Hayden Valley was once filled by an arm of Yellowstone Lake. the glacial till contains many different grain sizes, including clay and a thin layer of lake sediments, water cannot percolate readily into the ground. This is why the Hayden Valley is marshy and has little encroachment of trees. The valley is well known as one of the best locations to view wildlife in Yellowstone.