Things to Do and See Park Itineraries 4 Active Yellowstone Adventures to Test Your Stamina Hiking Avalanche Peak Trail with a Teton Mountain Range view in the far distance. Hiking Avalanche Peak Trail with a Teton Mountain Range view in the far distance. 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