A breathtaking video captures the moment a cyclist traverses an almost-vertical rock face to conquer the world's most dangerous trail - before making a return journey.
Michal Kollbek was filmed defying gravity as he made his way over the famed White Line in Sedona - a near impossible route carved into a rock in Arizona.
The stunning one-minute clip was filmed using a drone flying overhead and sees Polish rider Kollbek gradually make his way along the path with Red Rock State Park in the background.
Kollbek went all the way across the rock face, turned, and then came back, completing the trip without any problems.
Kollbek, 30, has had practice with extreme stunts before and the Polish rider has claimed numerous downhill racing titles. He claimed he attempted the heart-stopping stunt because he happened to be in the area.
To prepare for the horizontal ride, Kollbeck had to let air out of his tyres to maximise their grip on the rocky face. He then adjusted the suspension on the bikes frame and raised his saddle and then walked across the route to create a mental picture.
"I live for thrills like this, and I would have tackled this line whether it was filmed or not," he told the Huffington Post.
"Conquering this ride was all mental. I was confident with my skills and knew I could execute it.
"The key was to block out the scary thoughts about the potential danger, so I just focused on the trail and not on the terrifying space around me."
- Daily Mail