Haleakalā

Haleakalā
East Maui Volcano
Haleakalā crater
Highest point
Elevation10,023 ft (3,055 m)
Prominence10,023 ft (3,055 m)
Isolation76 mi (123 km)
Listing
Coordinates20°42′35″N 156°15′12″W / 20.70972°N 156.25333°W / 20.70972; -156.25333
Geography
Haleakalā
Hawaii
LocationMaui, Hawaii, U.S.
Parent rangeHawaiian Islands
Topo mapUSGS Kilohana (HI)
Geology
Rock age(s)<1.0 Ma, Pleistocene epoch
Mountain typeShield volcano
Volcanic arc/beltHawaiian–Emperor seamount chain
Last eruptionbetween 1480 and 1600
Climbing
Easiest routepaved highway

Haleakalā (/ˌhɑːliˌɑːkəˈlɑː/; Hawaiian: Hawaiian pronunciation: [ˈhɐlɛˈjɐkəˈlaː]), or the East Maui Volcano, is a massive, active shield volcano that forms more than 75% of the Hawaiian Island of Maui. The western 25% of the island is formed by another volcano, Mauna Kahalawai, also referred to as the West Maui Mountains.

The tallest peak of Haleakalā ("house of the sun"), at 10,023 feet (3,055 m), is Puʻu ʻUlaʻula (Red Hill). From the summit one looks down into a massive depression some 11.25 mi (18.11 km) across, 3.2 mi (5.1 km) wide, and nearly 800 m (2,600 ft) deep. The surrounding walls are steep and the interior mostly barren-looking with a scattering of volcanic cones.