Premier location for rock climbing and hiking at this one billion year old batholith, but definitely not the place to go if you are looking for swimming opportunities. Primary feature at the natural area is the impossible to miss pink granite exfoliation dome rising approximately 425 feet above ground. Come listen to the enchanting crackling sounds the batholith makes at night during warm weather. The view from the top of the dome on a clear day is superb. Experts believe this area has been inhabited/visited by humans for over 11,000 years. That is almost as long as folks have been hanging out at San Marcos Springs. Pets on leash OK.