While you’re in the Peek-a-Boo Gulch area, why not check out its neighbor Spooky Gulch. This is actually one of the narrowest slot canyons on this list. It also includes some lengthy portions where you have to hike sideways in order to squeeze through. Indeed, this can sometimes create “traffic jams” during busy periods. Again, the best time to start this hike is early in the morning to avoid the crowds.
Without ropes, you can only see a small portion of the Subway. What you can hike, however, is incredible. The hike to the Subway is a bit long but reportedly fun and enjoyable. Here you will see a number of slanted waterfalls and an even larger one at the canyon’s end. You will need permits in order to hike here. They are available at the park’s visitor center or even online.