The picture is not of the pond at Fossil Bluff it is one of a very small glacier a few km from base.

There is a melt pond which is forming outside fossil bluff hut which sometimes gets so large that a boat is required to get from the ski way to the hut. Ponds of melted water can also develop under the ice. These ponds absorb the sun’s energy, rather than reflecting it as ice does, thereby having a significant influence on Earth’s radiation balance.