We stayed four days at Davis Mountain SP Texas. First night it was 24 degrees and we woke up to an ice covered camp ground. Not very many other campers so it was quiet. I doubt I will ever stay here again. I don't think five minutes went by without seeing some kind of park representative the ENTIRE time I was there. They constantly drove by 24 hours a day. I didn't necessarily feel intimidated, but I could have gone without this big brother type of surveilance.