I agree that this is a nice campground. I stopped at the Lava Beds visitors center at the end of last July, but didn't stay because the temperature was over 100 degrees and the campground had no hookups. I hope to go back in cooler weather sometime.
The area has caves that contain ice all year round. Given it's so hot there in the summer I had to think this over, but I guess as long as more water freezes in winter than melts in summer you can have year-round ice caves.
The Lava Beds is in our backyard. Maybe 40 miles south.
Nice campground. I believe it's open year round, at least one loop. If you go in February it isn't 100 degrees. Also in Feb. the crowds are down. We've been there when we were the only campers. That was a nice trip.