Jacob's Well in Wimberley, Texas is
one of the most dangerous and unsafe places to dive on Earth. Eight
deaths have been reported of divers exploring the well’s mysterious depths. Yet regardless of its horrific past, Jacob’s Well remains a popular summer
destination for families, it being the largest yearly spring in the Texas
Hill Country.
Jacob’s Well is a large perennial spring (4 meters in diamter) it flows out of the most extensive underwater cave system.Diver will reach a
massive 40 meters in depth. Authorities are strict with divers interested in
exploring the well. But
that doesn't stop thrill-seekers from taking the plunge.
You can pick up a video from here.