Hall Peak is a 5,484-foot mountain in Washington’s North Cascades, near Barlow Pass, the Mountain Loop Highway, and the Monte Cristo mining district. Named for prospector George Hall, who discovered the Forty Five claim in 1891, it reflects the region’s mining history as well as its rugged natural setting. The peak stands near Big Four Mountain and is visible from the Big Four picnic area and trail to the Ice Caves. Its environment is shaped by a marine west coast climate that brings heavy rain, wet snowfall, and avalanche danger, while tectonic activity, uplift, faulting, and glaciation formed the steep, U-shaped valleys around it.