is amongst the narrowest slot canyons in the Southwest, and lengthy sections are too tight to follow at floor level, requiring stemming many feet up. The lower end is not quite so enclosed, but still generally dark, deep and photogenic, and may contain long pools. Brimstone is the best of three slots (the others are Peekaboo
) which branch off the generally wider Dry Fork of Coyote Gulch, one of the more popular locations reached along Hole-in-the-Rock Road
in Grand Staircase-Escalante National Monument. Rather further downstream are some even more extreme tributaries - similar in character to Brimstone, but deeper, and tapering more gradually.
: 26 miles along Hole-in-the-Rock Road then 1.6 miles east on a lesser track - details