Jacob's Well
In Wimberly, Texas, there lies a well... but not just any type of well. This well, specifically, is underwater and goes down a depth of at least 100 feet, leading to a dark, dismal abyss that not many divers are keen on discovering. The depths below are disorienting, to say the least, but it's also a very narrow passageway which leads to the risk of being caught on the sides of the well itself.