Ice sheet sliding towards Helheim Glacier, originally uploaded by Dave Walsh Photography.
Ice sheet sliding towards Helheim Glacier, Sermilik Fjord, East Greenland. to get a sense of scale, that ice-filled Fjord in the background is about 6km wide.
Writer, photographer, environmental campaigner and "known troublemaker" Dave Walsh is the founder of Blather.net, 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.