Lava Flow on Mawson Peak, Heard Island
In October 2012, satellites measured subtle signals that suggested volcanic activity on remote Heard Island.
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These images, captured several months later, show proof of an eruption on Mawson Peak.
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April 7, 2013, Mawson's steep-walled summit crater had filled, and a trickle of lava had spilled down the volcano’s southwestern flank.
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On April 20, the lava flow remained visible and had even widened slightly just below the summit.
These natural-color images were collected by the Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) satellite.
Image Credit: NASA Earth Observatory