Plinth Peak and the fumarole ice cave at Mount Meager Volcano
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Plinth Peak and the fumarole ice cave at Mount Meager Volcano

by Gioachino Roberti

The decreased thickness of the ice at Mount Meager volcano allowed the formation of large fumarole ice caves in the glacier. Another effect of glacial debuttressing is slope instability: can you spot the landslide?

In the background is the west flank of Plinth Peak that is ripe for collapse.

Alex Wilson and Glyn William-Jones are measuring the gas composition to constrain the fumarole source.