Devils Hole Ravine is located along the American shoreline of the Niagara River Gorge just north of the Niagara Glen. It is a deep, bowl shaped basin of the Bloody Run tributary from Glacial Lake Tonawanda.
Even after the Niagara River eroded the Niagara Gorge beyond Devils Hole, the water of Lake Tonawanda continued to drain. One of the secondary outlets, located at Devils Hole, created a small ravine perpendicular to the wall of the Niagara Gorge.
The flow of Lake Tonawanda reduced before this infant gorge could establish itself. The name Bloody Run recalls the massacre of British soldiers by the Seneca Native Americans in 1763.