Things to Do and See Winter Activities Best Side of Yellowstone in Winter A cross-country skier at Orange Spring Mound on the Upper Terrance of Mammoth Hot Springs in Yellowstone A cross-country skier at Orange Spring Mound on the Upper Terrance of Mammoth Hot Springs in Yellowstone Share this Facebook Icon Twitter Icon Email Icon Join Yellowstone National Park Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Yellowstone National Park Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Photo: NPS/Jacob W Frank