Devil's Gate is a narrow cleft carved by the Sweetwater River through a ridge called the Sweetwater Rocks-370 feet deep, 1500 feet long, and only 50 feet wide in places.

Devil's Gate is among the more interesting geographical landmarks along the emigrant trails. This natural feature became visible approximately 15 miles to the east. The gorge was impassable to wagons, and the trail passed to the south of the ridge, but this dark, gloomy canyon intrigued the emigrants. Many camped here, and almost all took the detour to inspect the gorge. - NPS