Jacob's Well Natural Area, One of the longest underwater caves in Texas
Jacob's Well Is A Dangerous Natural Wonder
When you're in Texas and it's the thick of summer, you need some cold water—stat. In Hays County, Texas (about an hour southwest of Austin) sits a popular natural swimming spot: Jacob's Well. Yes, it's refreshing and beautiful, but it's also a never-ending black hole that has lured several divers to their deaths.