Hell's Canyon Campground is a rustic, first-come, first-served USDA Forest Service campground at 5,500 feet elevation in the Custer Gallatin National Forest, featuring 11 campsites with vault toilets and nearby fishing opportunities along the Boulder River drainage.

The campground requires visitors to bring their own water and firewood, follows pack-it-in/pack-it-out principles, and has a 20-foot vehicle length limit; access via Main Boulder Road (County Road 212) is approximately 25 miles south of Big Timber and may be impassable during winter months.

Pets are allowed, and the $10 nightly fee makes it an affordable option for tent campers and small RVs seeking a remote mountain experience.