But for the heat this is a very nice park. It is a seasonal campground that closes at the end of May and reopens in October. Late spring can be as hot as any summer day at this park, as we found out the hard way. We arrived late Friday night expecting the daytime temp to be around 80 or so degrees the next day. How wrong we were. We went on April 20 and the daytime high the next day was about 114 degrees. We decided this was much more than we bargained for and so we left. Aside from the heat this early, the park is a desert hot spring with three pools. One of the three is exclusively adult use only, I don't know the reason for this but no funny business or anything like that. The campground is well maintained with paved roads right up to the camp site with dirt/sand camping pads. There are both full hook up and primitive sites and everything in between. If you expect to be able to get a cell phone signal don't bank on it, you are isolated and the only connection to the world is a pay phone at the registration office. I went here visiting from memories of my youth when my folks used to take us there, I just don't remember the heat. Anyway, if you are going to visit this campground I think it could be much more enjoyable during the cooler times of the year unless you are just a die-hard and it doesn't matter. There were plenty of those out there too that just enjoyed their time no matter the heat. I will visit this park again but when it is much cooler. Last thing that is a little misleading, this park is actually in the city of Julian not Borrego Springs which is about 20 miles North of Agua Caliente though they are both considered the Anza Borrego Desert.