The heroic cult dedicated to Achilles on "Leuce" seems to go back to an account from the lost epic "Aethiopis" according to which, after his untimely death, Thetis had snatched her son from the funeral pyre and removed him to a mythical ("Leúkē Nêsos" "White Island"). Already in the fifth century BC, Pindar had mentioned a cult of Achilles on a "bright island" (φαεννά νᾶσος, "phaenná nâsos") of the Black Sea, while in another of his works, Pindar would retell the story of the immortalized Achilles living on a geographically indefinite Island of the Blest together with other heroes such as his father Peleus and Cadmus. Well known is the connection of these mythological Fortunate Isles (μακαρῶν νῆσοι, "makárôn nêsoi") or the Homeric Elysium with the stream Oceanus which according to Greek mythology surrounds the inhabited world, which should have accounted for the identification of the northern strands of the Euxine with it. Guy Hedreen has found further evidence for this connection of Achilles with the northern margin of the inhabited world in a poem by Alcaeus, speaking of "Achilles lord of Scythia" and the opposition of North and South, as evoked by Achilles' fight against the Aethiopian prince Memnon, who in his turn would be removed to his homeland by his mother Eos after his death.