Hair-raising pictures show the world's top base jumpers throwing themselves off huge mountain as they attempt to become the 'world's fastest flying human being'Jumping off the top of a mountain and hurtling as fast as you can to the bottom may not sound like everyone's cup of tea.
But as these incredible pictures show, there are plenty of daredevils who see it as a fun way to spend their free time.
These stomach-churning images were taken at the annual World Base Race in Norway, which attracts base jumpers from all four corners of the globe.
The event was won this weekend by brave British flying ace Tony Uragallo, 59.
Competitors wearing state-of-the-art wingsuits throw themselves off a platform 1,300 metres up a mountain cliff - with the winner being the fastest down.
They release their parachutes at an optimum point to glide safely to the finish line.