Tuktoyaktuk, Northwest Territories

This photograph, taken near Tuktoyaktuk in the Northwest Territories, shows two pingos, which are ice-cored mounds covered by soil. Pingos occur in permafrost terrain and are common in this area. These features along the coast are about 40 metres in height and protrude above a flat landscape lying between low uplands and the sea.

Source: Geological Survey of Canada, photograph number 2002-704. Reproduced with the permission of the Minister of Public Works and Government Services Canada, 2005 and courtesy of Natural Resources Canada, Geological Survey of Canada.