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.