Sometimes I would like to have the opportunity to meet the individual responsible for naming places. Some names have history, others describe appearances or animals you might happen across (looking at you Golden Warbler Trails in Texas).
And then there are names like Devils Canyon. Obviously the namer thought of this name before he saw the canyon and was just itching to put it to a canyon, any canyon probably. Is there much devilish about this place? Well, its hot. Even in late March it can approach miserable. This is a place I would advise against hiking in high summer. Or at least doing so in the early morning, with lots of water and a hat.
Devils Canyon as best as I can discern is but one of a series of canyons near the Colorado National Monument. As it is near but not in the Monument it is free! Yay!