Barton Springs is a natural spring located in Zilker Park in Austin, Texas. It is part of the Barton Springs Pool, a popular outdoor swimming area that maintains a consistent temperature of around 68-70°F (20-21°C) year-round. The pool is fed by underground springs and is approximately 1,000 feet long. The springs are home to various aquatic life, including the endangered Barton Springs salamander. The area surrounding the springs offers recreational opportunities such as hiking and picnicking, making it a favorite spot for both locals and visitors. The site is also significant for its ecological and historical importance.