The defeated Thracian king Diomedes is depicted on this Flemish tapestry (fabric of silk and wood). On the right, the victorious Herakles urges the man-eating horses of Diomedes to devour him. Two of them approach menacingly the captured king, who is unable to defend himself, having his hands tied. The defeated Thracian army appears in the background and to the left the ships of Herakles. The scene is surrounded by a zone with decorative flowers, leaves, and fruits.

This is the third tapestry of the surviving series named "The Labours of Herakles". In terms of morphology, clothing, and scenography, the tapestry refers to 16th-century Flanders.