Wonderful quiet place (except semana santa) with lots of nature, perfect for relaxing, watching animals and hiking. The 80km to the park from San Telmo are fully paved and well maintained, the views are amazing and the landscape changes from desert to high Sierra pine woods on 2400m. The street is sometimes very steep and it is narrow, so take your time. Big rigs won't fit, but with a medium sized Sprinter Van it was no problem. Price per person per day is now 64Pesos, camping is included, a little tour at the observatory is free. The campground is large, lots of very natural sites with fire pits, picnic tables and barbecue grills. No water no electricity and only pit toilets, so bring your own water& toilet paper. If you want to stay longer,also bring enough food&warm clothes. You can hike to 2 viewpoints, the Torre de las piedras (ca.2h, easy) or the Mirador El Altar (ca.3-4h, steep in the beginning) and have wonderful views over the desert, the pacific and the highest Baja mountain Picacho. if you want to know more about the history, there is a small museum, that you can visit for free on weekends. Ask the rangers, if they open it for you on weekdays too, they are very friendly.
Visited: April 25th, 2017
Location: 31.00036, -115.55676