Hamilton Pool Preserve is a natural pool that was created when the dome of an underground river collapsed due to massive erosion thousands of years ago. The pool is located about 23 miles (37 km) west of Austin, Texas off Highway 71. Since the 1960s, Hamilton Pool has been a popular summer swimming spot for Austin visitors and residents. Hamilton Pool Preserve consists of 232 acres (0.94 km2) of protected natural habitat featuring a jade green pool into which a 50-foot (15 m) waterfall flows.
Now the Hamilton Pool Nature Preserve is again hidden, and a trip there is well worth it. Thousands of years of water erosion created a unique natural area that gets most Disney animators thinking about a career change. Take your time to swim in the natural pool here.