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
Veneration of the dead days, people pray that the souls of ancestors be appeased, forget any animosity and find peace. Each year, on the particular date (as per the Hindu calendar) when the person had died, the family members repeat this ritual. Apart from this, there is also a fortnight-long duration each year called "Pitru Paksha" ("fortnight of ancestors"), when the family remembers all its ancestors and offers "Tarpan" to them. This period falls just before the Navratri or Durga Puja falling in the month of Ashwin. Mahalaya marks the end of the fortnight-long Tarpan to the ancestors. The "paliya" memorial stones are associated