Mount Eisen is a remote double-summit peak on California’s Great Western Divide in Sequoia National Park, notable for its dramatic rise above Pinto Lake and for draining toward both the Kaweah and Kern river systems. Set in an alpine Sierra Nevada climate shaped by Pacific storms, it is better known for its setting and conservation associations than for technical climbing. The mountain honors scientist and early conservationist Gustav Eisen, whose work helped support the establishment of Sequoia National Park. Its name was officially adopted in 1941, and his ashes were placed on the mountain’s north side near Redwood Meadow. The first recorded ascent occurred on July 15, 1949.