Castle Peak, at 14,274 feet, is the highest summit of the Elk Mountains and the Maroon Bells-Snowmass Wilderness, sitting on the divide between Gunnison and Pitkin counties. The name comes from the mountain's castellated summit ridge, a series of crenellated rock towers that give the peak an unmistakably fortress-like profile. First climbed in 1873 by the Hayden Survey, it ranks ninth among Colorado's fourteeners by prominence.
The standard approaches both begin by climbing into Montezuma Basin, passing the crumbling ruins of a 19th-century silver mine before the terrain opens onto a broad alpine bowl. The Northeast Ridge offers a straightforward snow climb to the ridge and then a slightly more technical scramble along shattered terrain to the top. The Northwest Ridge follows a moderate snow climb to the Castle-Conundrum saddle before an easy ridge walk, though mid- to late-summer can expose 200 feet of loose scree and dirt where the snow retreats. The Montezuma Glacier, a permanent snowfield between Castle and the neighboring Conundrum Peak, makes an ice axe worth carrying early in the season.
The summit provides sweeping views across the Elk Range toward the Maroon Bells, Pyramid Peak, and the Sawatch to the east. Afternoon thunderstorms build quickly here in July and August; an early start is well-advised.
