>Katla is Iceland's most dangerous volcano and is located underneath the Mýrdalsjökull ice cap.
Had to look this up:
>Katla is a large volcano in southern Iceland. It is very active; twenty eruptions have been documented between 930 and 1918, at intervals of 13–95 years. It has not erupted violently for 99 years, although there may have been small eruptions that did not break the ice cover, including ones in 1955, 1999, and 2011.
A half-mile ice cap means that the ice has accumulated at a rate of 8 meters per year since the last major eruption 99 years ago. That's equivalent to several dozen meters of snowfall per year.
I wonder if the caldera really gets that much snow, or if the last few eruptions were too small to melt all the ice in the caldera.
I would assume that since a caldera is usually shaped like a cup, there is some flow towards the center where it's deeper. I.e. like with water flowing into a lake, the glacier has a catchment area.
#/media/File:Eyjafjallaj%C3%B6kull_en_Katla.png){kind=link}
Had to look this up:
>Katla is a large volcano in southern Iceland. It is very active; twenty eruptions have been documented between 930 and 1918, at intervals of 13–95 years. It has not erupted violently for 99 years, although there may have been small eruptions that did not break the ice cover, including ones in 1955, 1999, and 2011.
Small eruptions that did not break the ice cover?