A two-part waterfall in Dunn Notch in the western Maine Mahoosuc Range, with a Lower Falls dropping roughly 80 feet into a narrow gorge and an Upper Falls of about 70 feet. The falls are reached via a side trail off the Appalachian Trail from East B Hill Road near Andover.
At 80 ft, it stands above roughly 63% of the 775 documented falls in this guide.
The falls are fed by West Branch Ellis River. You'll find it in Oxford, Maine. It is protected within Appalachian National Scenic Trail (NPS) / Mahoosuc.
This is a moderate hike waterfall: a longer day hike, roughly one to several miles each way. Plan for a moderate hike; sturdy shoes, water, and a little time on the trail are worth bringing. The walk to the main viewpoint runs about 3.2 miles round trip. Base a visit out of Andover, the closest town.
When to go: Late spring to fall (May-Oct). Like most waterfalls, Dunn 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.
