Obsidian Flat Group Campground is a primitive group site accommodating up to 50 people with one large site featuring vault toilets, picnic tables, and bear-proof food lockers, located adjacent to Deadman Creek at 7,800 feet elevation.

The campground requires visitors to bring their own water and is gated; it typically opens late May/early June and closes by late September depending on snow conditions. Access is via a 3. 2-mile dirt road from Highway 395, and reservations through Recreation.

gov are required well in advance.