The title seems a bit odd and somewhat of an overstatement – is that what you are thinking? Using the words of Karen & Eric, they say, “Ancient Mayan ceremonies and superstitions, human remains, a virtually unpronounceable name (Actun Tunichil Muknal (ATM) cave), narrow water-filled passages and more.” So perhaps “Underworld” is a correct description – at least that is what the Mayans thought they were entering. 128 more words