The twelve labors

In the fourth labor, Herakles was ordered to bring alive the wild boar living in the mount of Erymanthus, which was attacking the people and killing them.
Herakles visited his friend centaur Pholus. Upon Herakles insistence, Pholus offered him the wine belonging to the whole community of the centaurs. When the centaurs found out, they became angry and a fierce fighting started, in which Herakles killed many of them and wounded the centaur Chiron.
After the incident Herakles chased the boar, which fall into a deep patch of snow and trapped the animal with a net.

Herakles and the centaur Pholos, amphora 510 BC

Herakles fighting the Centaurs