Ash plume from Mount Bagana, Bougainville Island

Ash plume from Mount Bagana, Bougainville Island. The red hotspot and the rising ash plume mark the location of Mount Bagana, a massively symmetrical volcano that rises about 1750 m (1.08 mi) high, towering above the tropical vegetation.

Bagana is an active volcano located in the centre of the island of Bougainville, Papua New Guinea, the largest island of the Solomon group. It is the most active volcano in the country, occupying a remote portion of central Bougainville Island. It is one of Melanesia’s youngest and most active volcanoes. Ash plume from Mount Bagana, Bougainville Island Bagana is one of seven volcanoes on Bougainville that have been active in the last 10,000 years. Bagana, classified as a lava cone, is made of thick steep-sided blocky lava flows. The lava flows are andesite and can be up to 500 fee

Bagana is a massive symmetrical, roughly 1750-m-high lava cone largely constructed by an accumulation of viscous andesitic lava flows. The entire lava cone could have been constructed in about 300 years at its present rate of lava production. Eruptive activity at Bagana is frequent and is characterized by non-explosive effusion of viscous lava that maintains a small lava dome in the summit crater, although explosive activity occasionally producing pyroclastic flows also occurs. Lava flows form dramatic, freshly preserved tongue-shaped lobes up to 50-m-thick with prominent levees that descend the volcano’s flanks on all sides.

Just north-east of Bagana is the volcano crater lake Billy Mitchell. Bagana is one of 17 post-Miocene stratovolcanoes on Bougainville. U.S. General Floyd L. Parks flew over the Solomon Islands on 27 October 1948 and witnessed the eruption of Bagana. His photographs of Bagana erupting were published in Life magazine