Home > Biking > MTB Yee-Haw! Biking Down A River Dam Written by Staff Post Sep 04, 2015 9:20 a.m. ET Share this:Click to share on Facebook (Opens in new window)Click to email a link to a friend (Opens in new window) Support us! GearJunkie may earn a small commission from affiliate links in this article. Learn More This video was submitted as part of a contest hosted by GoPro and Pinkbike. What do you think, crazy enough for you?