Hamilton Pool is a natural swimming hole located in Travis County, Texas, near Austin. Formed by the collapse of an underground river, it features a stunning waterfall that cascades into a turquoise pool surrounded by limestone cliffs and lush vegetation. The area is part of the Hamilton Pool Preserve, which offers hiking trails and picnic spots. Visitors to Hamilton Pool can enjoy swimming, sunbathing, and exploring the scenic beauty of the preserve. To protect the environment, access is limited, and reservations are often required. The pool is a popular destination for both locals and tourists seeking a refreshing outdoor experience.