Nettle Warrior 2010: Pictures from the race

The start, complete with cannon fire and flares Photograph: Rui Vieira/PA Climbing the Colditz Walls - in just a thong Photograph: Rui Vieira/PA An aerial view of a rope crossing Photograph: Rui Vieira/PA The strength-sapping tyre crawl Photograph: Rui Vieira/PA Red devils tackle the swamp Photograph: Rui Vieira/PA Hold on to your hat for the log duck Photograph: Rui Vieira/PA A team of Smurfs take a mudbath Photograph: Rui Vieira/PA Crawling under barbed wire Photograph: Rui Vieira/PA Muddied but unbowed Photograph: Rui Vieira/PA Some of those mud pools are quite deep ... Photograph: Rui Vieira/PA Those suits must have got really heavy Photograph: Rui Vieira/PA Sliding down a muddy bank - gasmasks optional Photograph: Rui Vieira/PA