Adventure Pass ($5/day or $30/year), or Annual Interagency Pass required.
From Santa Margarita: Pozo County Rd. 22.5 miles east, Forest Rd. 29S02 4 miles northeast, non-designated Forest Rd. 1 mile north.
Tent camping with a barrier already in place to keep vehicles out. Walking trail right beside camp ground. Driving path to it is enough for single direction traffic and plenty of deeper ruts. 3+ fire pits and a couple of picnic benches.
Looks to be the only free site around here, and once you get there, you'll likely have plenty of nice space to yourselves! Do note, however, that it is NOT wise to attempt traversing the roads to the site via Prius.
It's a small but fairly nice campground. DO NOT go without a car suited for off-roading.
Also, lots of flies everywhere in the morning when I came here during the summer.
The road is not maintained with many deep ruts and encroaching branches that ought to buff out. No toilet, bring paper and a shovel. 3 tables and fire rings. The stars provided an amazing southern view and the trails went for miles.