If you find this difficult, be cheered in the knowledge that the wall is the hardest part in the entire canyon. Within a couple hundred yards, the drainage splits. Go right into Little Wild Horse, the smaller of the two canyons. Straight ahead is Bell Canyon, an alternate return route. Slot canyons aren't as dark and gloomy as they sound.
Sunlight plays off the walls high above.
Now and then you burst into bright alcoves with vertical bands of sandstone, like walking through whale's ribs. Everywhere the rock is sculptured into flowing lines, giving the feeling of motion. It's a little less than three miles to walk through the Reef. You can go as far as you like, then turn around. However, there is an incentive to make it all the way through.