- an active volcano on the Island of Hawaii: the youngest of the five shield volcanoes that form the island and the most active, having erupted almost continuously since 1983. 4,091 feet (1,247 meters).
- a crater on the E side of Mauna Loa volcano, on SE Hawaii island: the world's largest active crater. Height: 1247 m (4090 ft). Width: 3 km (2 miles)