Using this photo and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include th link to this page and give the photographer credit (in this case Peter Prokosch)
Polygon Tundra, Lena Delta
Polygon Lakes in the Arctic Tundra are unique to permafrost areas and form as a result of the freeze-thaw cycle that occurs here. With a layer of frozen earth below, water becomes trapped in pools on the surface.
The amount of carbon (Greenhouse Gases) stored within the upper layers of this frozen permafrost earth is more than is currently contained in the Earth's Atmosphere. (UNEP)