Metamorphoses

Ovid

Books 1–2: after the sun-chariot crash, Phaethon falls into the Eridanus; nymphs bury him on the bank and his sisters, the Heliades, become poplars weeping amber into the mythical river.

Eridanus (constellation)

The long celestial river south of Taurus still bears the mythic name — Eridanus as sky-stream after the Phaethon catastrophe.

Eridanos (mythology)

Mythical river of amber and mourning — identified with the Po, the Rhine, or a stream of Hades — forever linked to Phaethon's fall.