I camped on the rim of the hole with my daughter. While we had a good time, and there weren't very many other people around, we arrived after June 1 during a dry year, meaning no campfire. The temperature during the day was around 85, and pretty comfortable, but at night it dropped down to around 40. We were pretty cold since we had counted on a campfire. As for the Hole in the Ground, it is pretty cool, and you can walk the trails down into it and back up. Typical high desert semi forested terrain, decent roads, but bring a map, it's a hole, and therefore not visible until you're right up on it. Our map showed the power poles that run nearby, as well as the railroad tracks. We used those to orient ourselves so as to not get lost. There are no services here, so if you need something, you'd better bring it. We liked it, and will return.

Your mileage may vary. I was looking for a primitive campsite that was quiet and secluded. This fit the bill 100%. I hammock camp, using a stand when trees aren't available, and I am completely self contained. That being said, these sites are equipped with a pit toilet, fire rings, picnic tables, and a food locker to deter the bears. I put my food in the locker, and I'm very glad I did. About 3am something woke me up sniffing around my hammock. I was not able to see it without moving, but it bumped me and was large enough to make the hammock sway. So, be prepared there is wildlife out there.