Wide open BLM land. This particular spot is easily accessible, although I couldn't tell how friendly other campers were and you have to drive over sagebrush to really pull off the road if the one or two real pull offs are occupied. I ended up driving around rutted and rocky roads off the ones that are on Google maps, trying to find a good pull off but the few there are were already occupied, some by folks that seemed to have been there for a while. Some of the side roads were really rough and I was lucky to make it through them in my Subaru, although any vehicle could handle the main road to the spot tagged here.
It's also really exposed to the wind and elements with no trees. It's up pretty high and there's not really any wind break from the landscape. Very cold in mid September but I'd imagine really hot at times in the summer. I may have hit it at a particularly windy time but it definitely nearly made me look for an alternative spot, of which options are limited in the area.
Aside from that it was beautiful. Moon gazing and sunset and sunrise, smelled heavenly of sagebrush. I wouldn't count on seeing wild horses here- I read that recently they've been pushed out but you can look for them further east.