Mount Rainier National Park (rānērˈ, rə–) [key], 235,625 acres (95,395 hectares), SW Wash., in the Cascade Range; est. 1899. The area is dominated by Mt. Rainier, a volcanic peak 14,410 ft (4,392 m) high. The mountain is snow-crowned and has 26 glaciers, offering a challenge to serious climbers; its heavily forested lower slopes are popular with hikers. See National Parks and Monuments (table).