No idea who/when/where. Although, my GF and I think it might be the road to the marina on Arrowrock Reservior, north of Boise, ID.
Right kind of rock/shrubs, and road for there... When we head back that way this summer we'll swing by and see if we can find the spot, if it's htere. Road's only paved for a mile or two...
We camp about 20 miles up the unpaved part, Forestry Service campgrounds can be nice, when they're empty.