Hamilton Pool Preserve is a charming natural pool that was created thousands of years ago following the collapse of an underground river dome. The natural pool, which is located approximately half an hour west of the city of Austin, has been a popular natural swimming site for Austin-area residents and visitors since the mid-2oth century. In 1990, it was designated as a natural preserve by the Travis County Commissioner's Court. It spans 232 acres within a jade green pool area and is sourced by a picturesque 50-foot waterfall. Gorgeous stalactites hang from the pool's ceiling, which is home to cliff swallows and maidenhair ferns. Water levels stay fairly constant throughout the seasons and remain at a cool 50 degrees Fahrenheit. Above ground, the preserve's upland areas are home to beautiful cedar trees and the endangered golden-cheeked warbler. website

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