Strenuous hike

Union Falls

Near Yellowstone NP, Wyoming

Height250 ft
AccessStrenuous hike
Trail16 mi round trip
Best seasonSummer

a remote backcountry giant with a warm "Ouzel pool" beside it.

Flow varies with season and recent rain. Check conditions, water levels, and any permit or reservation rules before you go, and never climb on slick rock at the lip of a fall.