Hamilton Pool Preserve, Austin, Texas, United States

Although ranchers might have considered the grotto a safety hazard for their livestock, the Reimers soon realized its value as a recreational area and opened the property for public use. Around the turn of the 20th century, only a handful of people had the transportation to come out and enjoy the cool, serene surroundings. By the 1960s, and on into the 1980s, Hamilton Pool's popularity had soared, as visitors packed the legendary swimming hole. The land suffered from sheer numbers and few restrictions.
In addition to impact from the visiting public, cattle, sheep and goats grazed the delicate ecosystem for several decades, resulting in changes to the native vegetation. In 1980, the Texas Parks and Wildlife Department cited Hamilton Pool as the most significant natural area in rural Travis County. In 1985, Travis County purchased 232 acres (0.94 km2) from the Reimers family and implemented an aggressive land management plan to restore Hamilton Pool. Now, as Hamilton Pool Preserve, the lush fern-canopied cliffs are making a comeback, as are the rolling hills and meadows of the uplands.
Ongoing land management practices at Hamilton Pool Preserve include prescribed burns, prairie restoration, endangered species surveys, biological inventories and water quality monitoring.