Seminole Canyon State Park has an excellent visitor’s center with a comprehensive interpretive center detailing the history of the area. There is a rock shelter with many ancient pictographs visible on the walls spanning many years and different cultures.
There are several hiking trails, several ending at the Rio Grande, others leading to canyon overlooks, and one to an old windmill at the site of a spring that supplied scarce water to area inhabitants.
There were only two other campers in the park so it was very private and peaceful. It was hot, but cooled off for our evening walk, and we hiked up the Rio Grande trail at sunrise the next morning before we headed out.