The Parthians continued worshipping Greek gods syncretized together with Iranian deities. In common with other Mesoamerican cultures, the Maya worshipped feathered serpent deities. Female deities, such as Inanna, were widely worshipped. Inanna was also worshipped as one of the Sumerian war deities. Rituals were therefore centered around the worship of those elemental deities. Mictlan had nine layers which were inhabited by different deities and mythical beings. Later they became regarded as chthonic Underworld deities. The myths associating the underworld chthonic deities and fertility were not exclusive. The ancient Greeks entertained different versions of the origin of primordial deities. Snake worship is devotion to serpent deities. This does not use names of calendar units derived from the names of pagan deities. Tantric practice includes visualisation of deities, mantras and mandalas. Corellon appears in first edition AD&D Deities and Demigods. The ancient Uyghurs believed in many local deities. The Erinyes live in Erebus and are more ancient than any of the Olympian deities.