Haleakala National Park (häˌlāäˌkäläˈ) [key], 29,824 acres (12,074 hectares), on Maui island, Hawaii. Haleakala volcano, 10,023 ft (3,055 m) high, has been dormant since the mid-1700s. Its crater, 2,720 ft (829 m) deep with an area of 19 sq mi (49 sq km), is one of the largest in the world. Rare silversword plants and many native and migratory birds are found in the park. Originally part of Hawaii National Park (est. 1916), it gained separate park status in 1960. See National Parks and Monuments (table).