http://www.tpwd.state.tx.us/publications/parkguide/rgn_hc_009.phtml
As we pulled into the driveway and made our way down to the entrance gate, we looked in awe at the giant looming before us. We pulled up to the gate, paid our fee and were given a map of the park and were told that the hike was approximately 1-1/2 hours round trip. That sounded very do-able to me!