Cacus and Heracles (Roman-Labeled)

Catalogue ID: 05-local-and-lesser/145-cacus-heracles-vergil-ovid-roman

Cycle: Local and lesser — Roman reception of Heracles / Aventine aetiology

Version line: Roman transmission (Vergil / Ovid) of a Greek Heracles cattle-theft combat on the future site of Rome

Sources: Vergil, *Aeneid* 8.185–275 (**Roman**); Ovid, *Fasti* 1.543–586 (**Roman**); cf. Dionysius of Halicarnassus 1.39–42 (Greek antiquarian version of the same Italian exploit)

Source file: /workspace/greek-myth-catalogue/05-local-and-lesser/145-cacus-heracles-vergil-ovid-roman.md

Characters

Ajax — recovers the stolen cattle; kills Cacus
Cacus — cave-dwelling cattle-thief; fire-breathing monster (**Roman** cast)
Evander — Arcadian host at Pallanteum; founds Hercules’ rites
Geryon’s cattle — the herd being driven east
Vulcan — father of Cacus in Vergil

Places

Ara Maxima — altar founded in thanksgiving
Aventine cave — Cacus’s lair
Pallanteum — Evander’s settlement
Tiber — landscape of the exploit

Themes

Narrative

On his return with Geryon’s cattle, Heracles (Hercules) drove the herd through Italy and rested in the future Roman landscape by the Tiber. Cacus, a fire-breathing monstrous thief—son of Vulcan in Vergil—stole part of the cattle by dragging them backward into his Aventine cave so that hoofprints pointed outward. The remaining oxen lowed; the stolen ones answered from the cave; Heracles found the mouth, tore open the rock (or was trapped and broke out), and clubbed or strangled Cacus. Evander and the Arcadian settlers of Pallanteum then instituted rites of Hercules at the Ara Maxima in thanksgiving. Dionysius retells a Hellenized version for Greek readers; Ovid’s *Fasti* calendarizes the feast. Catalogue Cacus as Roman-labeled Heraclean aetiology of the Ara Maxima—Italian soil, Roman poets as primary narrative sources—distinct from the Greek Geryon labor proper.