Seminole Canyon State Park is located in the southwest part of Texas. The Rio Grande River and the Pecos River run through the park and have shaped the history of the area. The park is in the dessert, so the late fall, winter and early spring are the best times to visit. The summer can be very hot. The campground has developed sites with water and electricity, basic sites with water, and primitive sights without amenities. Some of the campsites have shade shelters and if one is available I highly recommend that you take it. The sun and heat can be brutal. Bring a tarp which can be tied up to the shelter for additional shade. The distinguishing feature of this park is the rock art. The art has been left in the area by different people groups over different eras. The Fate Bell Tour is the basic tour which is led by park staff. It provides an excellent overview of the history and rock art in the park. There are other tours to offsite locations that are also worth a visit if you have time. The White Shaman, Curly Tail Panther, Painted Shelter and Bonfire Shelter tours are all great. If you need a respite from the heat visit the nearby town of Langtry and stop in at the Judge Roy Bean museum. The museum contains some displays and a film about the Law West of the Pecos. One of the best features of the museum is that it also has cool water and air conditioning to escape the heat. ;)