A roughly 150-foot plunge of Boundary Creek in the remote Bechler region of southwestern Yellowstone; the name comes from a Shoshone word meaning 'straight down.' Access is a long backcountry hike of about 17 miles round trip from the Bechler Ranger Station.
At 150 ft, it stands above roughly 83% of the 775 documented falls in this guide.
The falls are fed by Boundary Creek. You'll find it in Teton, Wyoming. It is protected within National Park Service (Yellowstone National Park).
This is a backcountry waterfall: a remote, long, or permit-required trek for prepared visitors. Getting there takes a genuine backcountry effort, so come prepared with navigation, water, and enough daylight. The walk to the main viewpoint runs about 16.9 miles round trip. Base a visit out of Ashton, Idaho, the closest town.
When to go: Mid-July to September. Like most waterfalls, Dunanda Falls runs highest after snowmelt or heavy rain and can thin out in late summer, so it's worth checking recent streamflow and the land manager's conditions page before a long drive.
