Wall color:
The light on the top of the glacier is from the sun which is melting these glaciers at a very rapid pace. They are receding more and more each year. The iceberg is "calved" from these glaciers and will now begin its journey up the coast of Greenland, then down the coast of Baffin Island, Labrador, and Newfoundland before melting into the sea water. Green starts to appear in the mountains as the temperatures warm and the Polar Bear is in search of ice that takes him to his food.
