About 11 miles east past and via the Baja Country Club is San Carlos Hot Springs. It is scenic and a one way trip takes about 45 minutes (at 15 miles per hour). Several Open Camp sites can be found along the way.
2 wheel drive works, 4wd with clearance preferred, but do NOT go after a big rain storm due to road. There are several places where the water crosses the road see video.
Rancho San Carlos has 8 different natural pools, 6 duplex cabins, and space for open camping. Visit their site for more details and activies.
Other camp sites vary in rates and services.