Trip report
Technical canyon warning
May 28, 2018 — Listed coordinates are for the trailhead. Google Maps doesn't mark the dirt road when you navigate there, but here are the coordinates for that dirt road turn-off from UT-24: (38.76038,-110.4482622). To reach the trailhead, turn off here (38.76039, -110.4483). There was a steep section here (38.76724, -110.47737) that will cause difficulties for low-clearance.
Head along a use trail on the south rim of Zero Gravity Canyon until you drop down. There are a few sections of narrows and a really interesting pothole that requires climbing. The open sections of the canyon have water, and one of them was deep enough to jump in rather than downclimb when we went. After the pothole mentioned above, the canyon enters a final narrow section that requires a 20-foot stemming down climb, where you'll see the optional rappel. We opted to go for it, and it requires stemming over a 20-foot drop to a boulder, where a bolt was hanging and served as our anchor. If you don't want to rappel, make sure you're skinny enough to fit below the boulder and continue stemming down. I'd say this section is where the R rating comes in. It takes a moment of concentration even if you choose to do the rappel.