It was first come, first served when I was there.  What you expect from free USFS campsites. Fire rings.

Google will take you down some crazy roads. Look at the map before getting on the dirt road and choose the roads that are the straightest; those will get you there easiest. Panhandle rd on the north side of the creek will take you most of the way.

This is an excellent and straightforward country park. It feels like a state park.

They have hookups and also dry camping. The better spots are near the water.

Contrary to other posts, they take walkups. It is just on the website it requires 2 weeks out.

The road is maintained but requires high clearance.

There are many sites on the way in and then 5 or 6 once at obsidian meadows trail head.

A few rock fire rings, but cannot be used when we were there.

Good AT&T and T-Mobile coverage

There are many sites up until the dead-end about 1.5 miles from the pay campground.  I camped up on the stream.  Great boondocking was here for a week. The road is in great shape. A couple of big rocks here and there.  Plenty of places to do a 3-point turnaround with any rig.

No cell coverage.  Got ok starlink between trees.