If you are looking for a slot canyon that requires no special equipment, no permit, no fee, and pretty much no experience - head over to the San Rafeal Swell for an adventure! About 3.5 hours southeast of Salt Lake City sits Goblin Valley State Park. A few miles outside of the park is Little Wild Horse Canyon. (It also looks like there is some AWESOME BLM camping nearby, so skip the campground inside the park).
We arrived at the trailhead about 4pm and the parking lot was packed, but it seemed like everyone was getting ready to leave. If you plan on doing this hike, I would recommend arriving early for a parking spot. Head past the bathrooms into a large dry wash to begin the hike.
We only had about an hour to spend inside the canyon so I was very excited when I found out the reward came with little to no effort! There were two places where we had to "scramble." I did have the pick our German Shepherd up one time. He tried to climb up but ended up sliding back down and waited patiently on me to lift him. He isn't into trying things more than once ;)
The canyon didn't narrow on us to the point of claustrophobia, but it did narrow enough to make it feel like you were in a slot canyon! Eventually the walls opened back up, and the scenery was amazing. This is the point we chose to turn around and head back since we wanted to check out Goblin Valley before sunset.
Slot canyon safety: DON'T enter a slot canyon if there is rain in the forecast for any of the surrounding areas. Head over to Youtube and search "slot canyon flash flood" if you don't believe me. Flash floods can happen within a matter of minutes. Stay safe!