The Leviathan altar was a stone construction used by the Leviathans for ceremonies. Two sliding slabs made the altar, situated in front of a large carving of the Naga, or symbol of the Leviathan people. When the slabs moved apart, a small cave-like entrance could be exposed beneath the Naga symbol. This led to an underground area of the altar. Carolyn Stoddard found the altar in the woods and wondered about its origins. Later that night, the altar opened, sliding to the sides of the Naga carving (888), and Barnabas Collins returned to 1969 (889).