Road Trips Gateway Towns Island Park, Yellowstone’s Quiet Western Satellite town Great Blue Heron and Mallards at Silvermine Lake in Harriman State Park Great Blue Heron and Mallards at Silvermine Lake in Harriman State Park 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: by Mwanner via Wikimedia Commons