Sir Orfeo as being a parallel dimension to the everyday world rather than the Land of the Dead as in the Greek myth of Orpheus and Eurydice. The ability to move between one world and the other distinguishes the tale as told in its various British versions such as "Sir Orfeo" and the Shetland ballad "King Orfeo" where the captors are envisaged as inhabitants of a parallel fairy domain rather than as the infernal region of the Dead ruled over by Hades as in the Greek myth. Katharine Briggs sees the tale as related in British folk narratives as being equally influenced
Hades the centaurs and to learn how to enter and exit the underworld alive. He found the entrance to the underworld at Taenarum. Athena and Hermes helped him through and back from Hades. Heracles asked Hades for permission to take Cerberus. Hades agreed as long as Heracles didn't harm Cerberus. When Heracles dragged the dog out of Hades, he passed through the cavern Acherusia. The nymph Minthe, associated with the river Cocytus, loved by Hades, was turned into the mint plant, by a jealous Persephone. In older Greek myths, the realm of Hades is the misty and gloomy abode of the