White Mountain Peak, Mountain summit in the White Mountains, Mono County, California, US.

White Mountain Peak is a 4,344-meter summit in the White Mountains of Mono County, California, not the Sierra Nevada. Its summit block consists of Mesozoic metavolcanic rock with dark and orange scree, and it is the third-highest peak in the state.

The University of California runs the White Mountain Research Center here, with Crooked Creek Station at 3,100 m, Barcroft Station at 3,800 m and a small hut on the summit, where the effects of altitude on the body are studied. A locked gate about 2 miles below Barcroft Station keeps the dirt road to hikers, though the station opens it once a year, usually on a summer Sunday.

The University of California runs the White Mountain Research Center from three high-altitude stations on the mountain: Crooked Creek at 3,100 m, Barcroft at 3,800 m, and a small hut at the summit. Researchers study the effects of altitude on human physiology at Barcroft and the summit hut.

Reaching the summit requires good physical fitness and preparation before attempting the hike. The best time to visit is during warmer months when snow has melted and the trail is more accessible.

The summit hut is one of three high-altitude stations of the University of California's White Mountain Research Center, alongside Barcroft Station at 3,800 m and Crooked Creek Station at 3,100 m. Researchers use the summit and Barcroft to study how altitude affects human physiology.