Spruce Knob, 9 miles west, rises to 4,860 feet as the highest point in West Virginia and lies slightly above the crest ridge of Spruce Mountain. That crest stands above 4,500 feet for more than 10 miles and is strewn with fragments of Pottsville Sandstone of the Pennsylvania Age. Nearby are Spruce Lake and the Sinks, where Gandy Creek disappears for about a mile into a cavern beneath a spur of the Alleghenies.