Ambrym

Ambrym is a roughly triangular volcanic island near the centre of Vanuatu. About 50 kilometres wide and covering 677.7 square kilometres, it ranks as the country’s fifth-largest island. Most of its interior is covered by dense jungle, with settlements concentrated in the three corners of the land. The population of 7,275 lives mainly from coconut plantations, while local communities maintain several distinct Austronesian languages. The island’s centre is dominated by a desert-like caldera some 12 kilometres across.

It formed in a huge Plinian eruption around AD 50, an event with exceptional explosive force on the volcanic index. Two active cones, Benbow and Marum, stand inside the depression. For much of recent history their lava lakes made the volcano famous, and repeated eruptions have affected the island. Ambrym belongs to the active New Hebrides volcanic arc and has a largely basaltic landscape.

Cinder cones occur at higher elevations, while the western end contains basaltic tuff rings produced when magma met water or saturated sediments near the coast. Dense forest supports birds including Vanuatu megapodes and several fruit doves and flycatchers. Accounts that Captain Cook named the island are doubtful because his expedition never landed there. The remote villages and active peaks together make Ambrym a place defined by volcanic power and dense island ecology.