Things to Do and See Geysers and Hot Springs 8 Best Yellowstone Geyser Basins and Map “YS-Mud-Volcano-Dragons-Mouth_DP_680” "Mud Volcano Dragon's Mouth Hot Spring | Deposit Photos" 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: Deposit Photos