This is the footage taken by mountain biker Steve Storey, then stabilized so the terrain doesn't bounce around, only the bike. It's pretty mesmerizing to watch. Also, that ride looked pretty dangerous. There were several times when I thought he was going to wind up kissing a tree. Or, worse, unintentionally banging one. Of course maybe I'm just projecting because I know I could never do this because I have the reflexes of a sloth. True story: one time some dude punched me in a bar fight and I didn't even react till the next day, when I found out where he lived and set the place on fire.
Keep going for the video.
Thanks to Shane L, who agrees if you're going to fight a tree, it's way better to attack with an axe than your head.