Metopes, the panels on a temple between the columns and the pediment, were ideal places to decorate with sculpture; they are square, and come in sets of even numbers. On the temple of Zeus at Olympia there were six at each end of the cella, the inner part of the temple — their decoration with the labours of Herakles contributed greatly to the hero’s achievements being quantified as a canonical twelve.

One of the labours is depicted here, as Herakles presents the Stymphalian birds to Athena. The temple was built by a local architect called Libon, but was destroyed by an earthquake in the fifth century CE