Petermann Glacier from above

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Petermann Glacier, seen from above, northwestern Greenland. To get a sense of scale, I’d say you’re looking at an area about 1.5km wide.

Photographed from a helicopter on the first leg of the Greenpeace Arctic Impacts expedition 07/07/2009. Peterman glacier is the longest floating glacier in the northern hemisphere. The floating area is 16km by 80km. A 100 square km chunk, about 5 billion tonnes of ice is about to break off – and we’re planning on being there to see it. Read my articles at the Climate Change blog

Chief Bottle Washer at Blather
Writer, photographer, environmental campaigner and "known troublemaker" Dave Walsh is the founder of, described both as "possibly the most arrogant and depraved website to be found either side of the majestic Shannon River", and "the nicest website circulating in Ireland". Half Irishman, half-bicycle. He lives in southern Irish city of Barcelona.