Big Hole in the Ground
You are looking at Jacobs Well located in south-central Texas. This well, has some very clear water, and you can see right into the large manhole inside, there are actually different tunnel systems down there that are very easy to get lost in, and you may not come out alive if you try, so maybe its better to just enjoy from afar.
Source: YouTube
It’s almost like a fairy tale. Nestled inside a quiet town in Texas, is a bottomless, dark, underwater pit with water so clear and blue it draws adventure-seekers from all over the globe. However, there have been over ten deaths there, that they know of. So, rather be safe than sorry when going to this place.