Pinnacle of ice near the mouth of Kangerlugussuaq Fjord, East Greenland. The structure is part of a large iceberg, not pictured, worn away by wind and waves.
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.