Satan's Hollow

Satan's Hollow in Blue Ash (a Cincinnati suburb) is the name of an underground "altar room," located in the sewer system, where a group of Satan worshippers supposedly raised demons and even dealt with the Dark One himself. One of his minions, a demon in the form of a "shadow man," haunts the underground tunnels where they performed their ceremonies. The screams of a woman are often heard echoing through the passages.