The Taam ja’ is blue hole is still defined by what we don’t know. We can say it’s deeper than 1,390 feet, and the bottom hasn’t been found.
A massive underwater sinkhole off the coast of Mexico has swallowed every instrument scientists have lowered into it, and they still have no idea how far down it goes. The Taam ja’ Blue Hole, sitting ...
Scientists haven't been able to reach the bottom.