This is a fairly technical ride. I would rate it 8/10 in technicality, but a 6/10 in aerobic difficulty because its so short. Super fun ride. Trail takes up up to a rim that overlooks the bearclaw poppy trail.
Take the Bluff Street I-15 exit in St. George and turn west. Immediately turn south (left) at the first light. Go over the hill and at the T intersection at the bottom of the hill turn right. Head northwest about two miles on Dixie Drive. Turn left at Canyon View Road, heading uphill toward the Green Valley Spa. (If you reach a \"Green Valley Market\" with gas pumps, you just passed it. Turn around and backtrack to the second road on your right.) Drive past the spa onto dirt at the end of the road. Turn right at the top of the mesa, then immediately left to drive down into the deep valley. Head for the big road that goes up the bluff, on the right side of The Gap -- the sandstone canyon. But just before that road starts to climb, mosey to the left and park where you can start riding up the doubletrack on the LEFT (south) side of the sandstone canyon.
http://www.singletracks.com/item.php?c=1&i=2954