The area is popular with rock climbers, hikers, and campers; there are 53 km of roads for hiking and mountain biking.The park is almost completely covered by volcanic rocks that have been shaped into amazing formations by wind and water erosion.Sierra de Majalca is the point of origin of the Sacramento River that flows towards the state capital city.The park is part of a fragile ecosystem which includes a few endangered species like: American black bear and cougar.Other mammals that can be found in the park are: white-tailed deer, eastern cottontail, North American porcupine, bobcat, and coyote.