Adventurer Bear Grylls is shown at Mount Borradaile in Australia's northwestern Arnhemland during filming of the Discovery Channel series "Man vs. Wild" in May 2010. (AP Photo/Discovery Channel, Luis Enrique Ascui)

Photo by: LUIS ENRIQUE ASCUI

Adventurer Bear Grylls is shown at Mount Borradaile in Australia's northwestern Arnhemland during filming of the Discovery Channel series "Man vs. Wild" in May 2010. (AP Photo/Discovery Channel, Luis Enrique Ascui)