sbk – imola by mirco.81, used under CC BY-SA 2.0 / cropped, adjusted size and colors

  DSC01275_DxO by youkeys, used under CC BY 2.0 / cropped, adjusted size and colors

  DSC01269_DxO by youkeys, used under CC BY 2.0 / cropped, adjusted size and colors

  Tracey Dugdale (My Sister) Climbing Bastille Crack by Dave Dugdale, used under CC BY-SA 2.0 / cropped, adjusted size and colors

  DSC03405 by Daniel Frey, used under CC BY-SA 2.0 / cropped, adjusted size and colors

  Free Climbing by Björn Söderqvist, used under CC BY-SA 2.0 / cropped, adjusted size and colors

  Climb by Efrén, used under CC BY-SA 2.0 / cropped, adjusted size and colors

 20140622-124023-d610-DSC_2345 by Vasile Cotovanu, used under CC BY-SA 2.0 / cropped, adjusted size and colors

 SpeedBoats 0514 3503 by Ross Elliott, used under CC BY-SA 2.0 / cropped, adjusted size and colors

 Tug O’ War by Michael Elleray, used under CC BY-SA 2.0 / cropped, adjusted size and colors

 Olympics by Aurelien Guichard, used under CC BY-SA 2.0 / cropped, adjusted size and colors