Take a mountain bike ride down the Portal Trail in Moab, Utah from the comfort of your own home as you watch this cool video. Filmed by mountain biker Nate Hills who is trailing rider Kyle Mears on the upper portion of the Portal Trail. This is a very dangerous trail and should only be attempted by expert riders. These guys make it look easy but one mistake and they could go crashing down the mountain. To see the rest of this extreme mountain bike ride watch Mountain Biking The Portal Trail.