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Heard Island and McDonald Islands

Antarctica

Photos of Heard Island and McDonald Islands

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The northeastern slopes of Big Ben volcano on Heard Island are visible in shadow at the top right of this photo. Mawson Peak (small circle in the upper center of the image), sits in a breached caldera (collapsed and empty magma chamber beneath a volcano) on the southwestern side of the volcano -- the peak's shadow points to the crescent-shaped caldera rim. This image, taken during the Southern Hemisphere summer, also shows the dark brown volcanic rock that forms the island. The southwest-pointing tongue of ice is Gotley Glacier. Image credit: NASA.
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