Things to Do and See Winter Activities 48 Hours in Winter in Yellowstone and Grand Teton National Parks “YS-snowcoach-TuffCliff_NPSJacobWFrank_700” "NPS Jacob W Frank" Under construction 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