Not mountainbiking, but RAD anyway
This isn't mountainbiking, but it is cool OK... and come on it's the summer and everyone loves a bit of surf action don't they!?
Foster Huntington is that dude that brought us #vanlife and A Restless Transplant, and that totally amazing treehouse (the Cinder Cone) with hot tub and skatepark... c'mon, sure you know him. Anyway, watch this and then imagine the same style but with bikes (or without!).