WATCH: The Most Terrifying Mountain Biking Trail We Have Ever Seen

Some thrillseekers are never satisfied.

Each adrenaline rush only lays the groundwork for something even more spectacular. A single backflip on a dirtbike needs to be followed by a double, a 720 spin on a skateboard needs to be one-upped with a 900, and a steep mountain bike trail can only be rivaled by a steeper and narrower one.

These mountain bikers will be hard pressed to find a more difficult trail to ride. By the looks of it, even the most skilled hikers would be nervous here.

Going quickly on a bike just makes it that much scarier.

Check out the harrowing adventure below (YouTube via Devour):

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