Four views of a white-ground lekythos. Attributed to the Sappho Painter. Greek (Attic), Archaic Period, c. 500 B.C. Terracotta. Metropolitan Museum of Art.
From the Met:
This vase shows a scene that must be related to Herakles’ journey to the west, outside the ring of ocean that encircled the earth. Traveling in the bowl of the sun, he reached an otherworldly place where he had to kill the monster Geryon, a creature similar to Hades, the god of the underworld. Here Herakles offers a sacrifice to Helios as the sun rises.