Free, pack-in pack-out site with vault toilets, picnic tables and fire pits. The Rim campground is perfectly nice, but if you can manage it roll on down the rocky, rough dirt road to the canyon campsite. We wanted to stay at the bottom, but decided not to risk getting stuck down there given that snow was coming in overnight (my 2wd is not snow-proficient, especially on steep roads).

Seemed to be mostly other climbers at the site, and lots of dog-friends. Really beautiful, quiet place, though beware you likely won't have cell service at the camp or anywhere near (including in the town of Roy).