Arroyo Salado campground is a primative campground complete with fire pits and pit toilets. It is right off highway S22 and the exit is easily missed if not paying attention. Once you drive in there is a one way dirt road easily accessible by a 2wd sedan. There are about a dozen campsites each with their own fire pit. Sunrise is particularly amazing since you can see the a mist coming off the Salton Sea. I've been to Arroyo Salado twice, both times have been in January and the weather has always been chilly but not too cold. This being said it does get very windy around sunset. I burned though a 3 hour fire log in about 40 minutes. Next time I would wait till nightfall when the wind dies down and cook dinner then.