Castle Crags Campground Lower Loop offers 76 developed campsites with picnic tables, fire rings, and bear-proof food lockers, plus flush toilets, showers, and drinking water nearby.

The campground provides direct access to the Sacramento River for fishing and swimming via a pedestrian underpass, with additional river access points along Riverside Road.

Located off I-5 near Dunsmuir at 2,040 feet elevation, the forested campground accommodates RVs up to 27 feet and trailers up to 21 feet, with reservations available up to 6 months in advance at $25/night.