Heated from below
This chunk of snow looks like it has been melted from above AND below. It is situated on one of the lava flows of the 2010 eruption of the Eyjafjallajökull volcano in Iceland.
This image is from the presentation "A Tour of Elemental Iceland - Supplemental Images".

Go to presentation where this image occurs.
Go to location in presentation where this image occurs.
Copyright 2001-2016 alavigne.net.