Incredible video footage has been released of a mountain biker's steep, high speed descent down the wall of dam in Slovenia.
Primoz Ravnik and his mountain bike were lowered down to a launching point on the rim of the dam.
With a body camera attached, the daredevil captured every terrifying second of his 60-metre plunge into a pool of water below.
With careful planning, and support from friends, Ravnik was unhurt in the stunt.
The video has been entered into the GoPro of the World Best Line contest and viewed more than four million times on YouTube.
The competition awards $1,000 every month for the best video, and at the end of the year the best professional daredevil receives a grand prize of $20,000.
Contestants are warned to follow strict safety measures and procedures before attempting any stunt.
Watch the full video below:
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