Page "Lethe" Paragraph 2

Lethe ( lee-thee ), the river of forgetfulness, was one of the five rivers of the Greek underworld, the other four being Styx ( the river of hate ), Akheron ( the river of sorrow ), Kokytos ( 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.