The Boar of #erymanthios
Erymanthios is a real mountain in the NW Peloponnese and its lower slopes did have Mid Helladic and Mycenaean settlements and those fertile slopes and farms were once ravaged by a enormous wild boar.
Heracles was ordered to bring the beast back alive not just kill it.
Now this wily porcine know all the hiding places and thickets and it was winter when Heracles finally cornered the beast forcing it into a deep drift of snow so he could could snare it and tie and bind it and carry it back to Mycenae.
His unfortunate cousin Eurystheus was so horrified he was said to have hidden himself inside a pithos or a bronze urn and refused to face him though the vase painter seems to have preferred a version of the story in which Heracles confronts him.
Perhaps this is a scene from an Attic satyr play?