Lethe alpha literally means "un-forgetfulness" or "un-concealment". Lethe, the river of forgetfulness, was one of the five rivers of the Greek underworld, the other four being Styx, Acheron (the river of sorrow), Cocytus (the river of lamentation) and Phlegethon (the river of fire). According to Statius, it bordered Elysium, the final resting place of the virtuous. Ovid wrote that the river flowed through the cave of Hypnos, god of sleep, where its murmuring would induce drowsiness. The shades of the dead were required to drink the waters of the Lethe in order to forget their earthly life. In the "Aeneid", Virgil
Barge of the Dead travel to Gre'thor on a barge steered by a ferryman". Religious studies scholars Ross Kraemer, William Cassidy, and Susan L Schwartz interpreted the representation of Gre'thor and Klingon spirituality as borrowing from Norse and Greek mythology, specifically the crossing of the rainbow bridge Bifröst or the river Styx. Exploring the influence of the Greek story of Odysseus (Latin: Ulysses) on "Star Trek: Voyager", the Classical philologist Otta Wenskus points to Siren-like creatures who call out with the voices of those loved by those on the barge. Though the motif of a barge and ferryman is not present in Homer's portrayal