Sam Bass, Bonnie and Clyde, and Jesse James also used the small cave above the pool as hideouts. Gus Fruh Pool is another reliable swimming hole even during droughts. Triple Falls and Gus Fruh Park are at the three-mile mark on the trail and have large boulders and deep water. Twin Falls can be accessed at Loop 360 across from the entrance to Barton Creek Mall. You will find a rope swing and good swimming under two small waterfalls.
Most access points have rest rooms and picnic tables.
Of interest is Airman's Cave , a 2.1-mile long cave. It is the longest cave in the country with an average height of only three feet. Only five percent of the cave is tall enough to stand up in, and usually one person gets stuck every year and has to be rescued.