 Devils Thumb is part of a group of striking, difficult rock peaks on the western edge of the Stikine Icecap.The Stikine Icecap occupies the crest of the Boundary Ranges, a subrange of the Coast Mountains spanning the Canada–United States border, north of the mouth of the Stikine River.Other peaks in the area include the Witches Tits and Cat's Ears Spires (part of the western ridge of the Devils Thumb massif itself), and Mount Burkett and Burkett Needle, a pair of spires about to the northeast.