Red Slate Mountain

Red Slate Mountain rises to 4013 meters (13,165 feet) in the Sierra Nevada and forms a natural boundary between Fresno and Mono Counties. The peak sits along the high ridge crest that divides these two regions.

The California Geological Survey named the peak in 1873 based on its distinctive red-colored slate formations. Joseph LeConte and Clarence Cory recorded the first ascent in 1898.

Mountaineers seek out this peak for its technical climbing opportunities and steep passages. The mountain draws experienced climbers who pursue challenging routes along its ridges.

Reaching the summit requires hiking from the McGee Creek trailhead through variable terrain with significant elevation gain. Visitors should expect challenging conditions and steep passages on the upper sections of the route.

The north face of the peak features a dramatic snow-filled couloir with steep 40-degree angles that appeals to experienced snow climbers. This feature creates one of the more technical approaches to the summit among Sierra peaks in the region.

Location: California

Location: Mono County

Location: Fresno County

Elevation above the sea: 4,013 m

Part of: Sierra Peaks Section Peaks List, Vagmarken Club Sierra Crest List

GPS coordinates: 37.50744,-118.86929

Latest update: December 10, 2025 16:25