Camp Muir, named for the naturalist John Muir, is a high-altitude refuge for climbers in Mount Rainier National Park in Washington, accessed through the Paradise Entrance. The shelters comprising the camp are situated at a elevation between the Muir Snowfield and the Cowlitz Glacier on Mount Rainier. Camp Muir is the most-used base camp for those attempting to climb to the mountain's summit. Camp Muir is between the Nisqually and Paradise Glaciers.