Mystic Falls is a 70-foot (21 m) cascade type waterfall on the Little Firehole River, a tributary of the Firehole River. Originally named Little Firehole Falls by members of the 1872 Hayden Geologic Survey, the name was changed to Mystic Falls by members of the Arnold Hague Geological Survey in 1885 for unknown reasons.
Yellowstone National Park, Teton County, Wyoming.