Along Tucannon Rd there are several free state campgrounds, and right where the road turns to dirt there is this USFS campground. It’s $8/night, no host on site, no reservations, self pay at the board. Really peaceful and quiet, very beautiful.
At the end of the campground is an Environmental Learning Center/ kids camp, so you may get some traffic from that. There’s also a little hiking trail that was overgrown and unmaintained when we were there, it was really beautiful though. Pit toilets here, no water and no trash, no amenities. Zero cell reception in this entire area, pretty much all the way until hwy 12.
The sites here at this campground all have different configurations, most didn’t look level, but there were a bunch that would have fit our 26ft class c. Sites 15 & 16 are in one huge area off by themselves (together), so a big group would fit here well (2 car limit per site, 8 people limit per site), so 4 cars and 16 people for the large lot with 15 & 16.
There’s a nice creek running through here, so the sound was nice and soothing.
When looking at directions to get here, heads up that the roads that connect Tucannon Rd to Hwy 12 going east are not suitable for big rigs, so you’ll have to drive west all the way to Hwy 12 then to Delaney and then take 12 east from there.