The most dangerous cave in the world is probably what is also the world’s most dangerous dive site Blue Hole in the Gulf of Aqaba off the coast of Egypt. Not for nothing is this unbelievably stunning attraction called the “Diver’s Cemetery.” It’s famous for the “the arch,” a convoluted passageway to open waters lying around 56 meters below the surface of the earth. The most dangerous point in the hole is the ‘arch,’ which opens up to an 85-feet-long reef tunnel that cuts into the open sea at 170 feet of depth.
