There have been some other discussions of Bog and other hotsprings in the general area, but I'm too lazy to dig them up. Briefly, Bog is a dandy hot spring with a wide gravel road a few hundred yards from it. It is pretty easy to land on the road and there is a flat spot to pull off. While the main road is an all weather road, the side road to the springs and the flat all get plenty muddy after a rain.
Denio Junction (e85), is about ten miles East of Bog Hot springs. They have Mogas with ethanol, a cafe, a simple store, and a motel. The airstrip is dirt, with a cross wind and regular runway. I've camped on the airport, but I don't know if it is officially okay. I can't see anyone caring as long as you don't camp in the middle of the runway. The locals walk, jog, exercise dogs, and cut across the runways with old pickup trucks, so watch out for them.
In the general area are Alvord Hot Springs, Mickey Hot Springs, Willow Creek Hot Springs, and a bunch more south in the Black Rock Desert area. Have fun. This is a neat area to explore.
tom
here's the previous discussion:
viewtopic.php?f=1&t=507