Marum Crater (closeup)

Marum Crater (closeup)

Ambrym is a volcanic island in Malampa Province in the archipelago of Vanuatu. It is actually a large basaltic volcano which has a massive, 1900-year-old, 12 kilometers (7.5 mi) × 8 kilometers (5.0 mi) caldera. The caldera is the site of two active volcanic cones, Benbow and Marum. Often, both Marum and Benbow (as well as other craters) contain small lava lakes, which occasionally erupt lava flows onto the caldera floor, or even exit the caldera through erosion gaps.

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