In Greek mythology, what punishment did Zeus impose on Prometheus before sending Pandora to humans?

In Greek mythology, Zeus punished Prometheus by chaining him to a rock before sending Pandora to humans.

Prometheus had taken fire from the gods and given it to humanity. In the best-known version of the myth, Zeus responded by having Prometheus bound to a mountain or rock, where an eagle repeatedly ate his liver. Because Prometheus was immortal, the liver grew back, allowing the punishment to continue.

The details vary between ancient authors. Hesiod’s Theogony and Works and Days both discuss Prometheus and Zeus, but they do not present every later detail in exactly the same form. The recurring central idea is that Prometheus’s aid to humans provokes divine punishment.

Pandora’s creation is another part of Zeus’s response. Hesiod frames her as a harmful gift sent to humanity, whereas later retellings often make her opening of the jar the main event. Prometheus’s punishment and Pandora’s arrival are related episodes, but Pandora is sent especially to punish humans for accepting fire and benefiting from Prometheus’s act.