Photos
Photo Details
2 of 3
Heard Island and McDonald Islands
In October 2012, satellites measured subtle signals that suggested volcanic activity on remote Heard Island. These images, captured several months later, show proof of an eruption on Mawson Peak. By early April 2013, Mawson's steep-walled summit crater had filled, and a trickle of lava had spilled down the volcano's southwestern flank. Image courtesy of NASA.