The Most Dangerous Places to Swim Around the World – Ranked

45. Jacobs Well in Texas

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.

Source: YouTube

You may not come out alive if you try, so maybe it’s better to just enjoy from afar.