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Hercules, the Monster Cacus, and Academic Jawbreakers in Aeneid Book 8 (Ad Navseam Ep. 108)

Meta Description: Join the Ad Navseam Podcast in Episode 108 as Dr. Jeff Winkle and Dr. David Noe tackle Vergil’s Aeneid Book 8. Discover the epic battle between Hercules and the monster Cacus, Augustan propaganda, and resources to master the Latin language.

Introduction: New Year’s Resolutions

Welcome back, classical gourmands, to Episode 108 of the Ad Navseam Podcast! Broadcasting directly from the subterranean depths of the bunker (fondly known as Vomitorium South), your hosts Dr. Jeff Winkle and Dr. David Noe return to the microphones to kick off a brand new year of classical goodness.

Recording on a chilly January evening, Dave and Jeff open the episode by discussing their New Year’s resolutions. Jeff notes that he is getting back into weightlifting and intends to stay fit. Dave, on the other hand, resolves to stop complaining about the miserable, unpredictable Michigan weather (a staple of his past podcasting banter) alongside a determination to successfully write “2023” on all of his physical checks. Jeff immediately mocks Dave’s reliance on paper checks, proudly declaring his allegiance to digital payment apps like Venmo.

With the holiday malaise officially in the rearview mirror, the boys turn their attention back to Vergil’s Aeneid. While Dave typically views the intermediary books of epics (like Books 8, 9, and 10) as the sleepy “doldra” of the narrative, he admits that the first half of Book 8 is actually a wonderfully invigorating, action-packed thrill ride.

The Vision of Tiberinus and the White Sow

Before introducing the monsters, Dave and Jeff trace Aeneas’s steps at the beginning of Book 8. Aeneas is currently tossing and turning on a knife-edge of indecision regarding the impending war with the native Italians. During his restless sleep, the river god Tiberinus appears to him in a vision, offering reassurance and a vital prophecy.

Tiberinus tells Aeneas that he will find a massive white sow nursing a litter of thirty white piglets underneath the oak trees. Jeff points out that discovering an albino pig with thirty piglets is an extraordinary prodigy of nature, functioning as a clear divine sign of future Roman prosperity. Dave notes that the Romans were a deeply ritualistic people who loved peeling back the appearances of everyday natural occurrences (like the flight of birds or the behavior of animals) to glimpse the divine will hidden underneath.

Following the river god’s advice, Aeneas rows up the calm, placid waters of the Tiber River until he encounters the Arcadians. The Arcadians are a rustic, simple people ruled by King Evander and his son Pallas. Evander warmly welcomes the Trojans, fondly recalling a time when he met Aeneas’s father, Anchises, and received a gold cloak and a quiver of arrows as gifts. Evander then invites Aeneas to join their local festival honoring Hercules, pointing to a collapsed pile of boulders and initiating a story about the site’s dark history.

Sesquipedalian Prose and Ideological Panoramas

At this point, the primary academic focus of Episode 108 begins: the famous story of Hercules and the monster Cacus. To set the stage, Jeff reads an opening quote from an article by David Antonio Secchi, published in the Harvard Studies in Classical Philology.

Secchi writes, “The tale of the struggle between Hercules and Cacus towers over the ideological panorama of Aeneid Eight”. He goes on to describe the story as a “complex weave of ideological and mythological motives” containing structural inconsistencies.

Dave playfully interrupts to mock the author’s incredibly dense, “florid prose”. He jokes that in the world of high-level academia, writers frequently use massive, “sesquipedalian” jawbreakers just to sound significant, effectively sacrificing clarity to appear profound. Despite the thick language, Secchi’s main point resonates with both hosts: the Cacus episode is a massive mythological set piece that requires careful analysis.

The Backstory: Geryon and the Ultimate Heist

Before dissecting the text, Jeff and Dave provide the necessary mythological backstory.

According to the legend, Hercules is currently on his way back to Greece after completing his tenth labor in Spain. For this labor, the hero had to defeat Geryon, a terrifying, triple-bodied ghoul born from the blood of Medusa, and steal his prized cattle. Driving this massive herd of stolen cows back home, the legendary demigod takes a massive geographical detour over the Pyrenees, across the Alps, and down into the Italian peninsula. Dave notes that this detour functions as a parergon—a “side job” taken on between the official twelve labors. The Romans constantly co-opted Greek myths, tweaking the geography so that legendary figures like Hercules would conveniently pass through local Italian real estate, thereby connecting Rome directly to the greater heroic age.

Upon arriving in Italy, Hercules encounters Cacus. Cacus is a half-human, fire-breathing monster sired by Vulcan, the god of the forge. Living in a subterranean cave on the Aventine Hill, this vile creature decorates his front door by nailing the moldering, decaying heads of his human victims to the rock.

While Hercules rests, the fiendish Cacus decides to rustle four superb bulls and four outstanding heifers from the herd. To hide his crime, Cacus employs a brilliant trick: he drags the massive cattle backward by their tails into the cave. Because the hoofprints point away from the lair, anyone tracking the stolen animals would assume they wandered off into the wilderness. Hercules wakes up and prepares to leave, completely unaware of the missing livestock, but the ruse is ruined when one of the stolen heifers inside the cave lets out a loud bellow.

The Battle: Tearing Off the Mountaintop

Realizing a theft has occurred, Hercules’s wrath flares with “black bile”. Grabbing his heavy, knotted club, the “mightiest Avenger” charges straight up the slope of the Aventine Mount.

For the first time in his life, Cacus experiences pure terror. The ogre flees into his cave and shatters the iron chains holding a giant suspended boulder, dropping the massive rock to perfectly seal the entrance. Hercules tries the rock-solid entrance three times, sinking down exhausted after failing to break through the blockade.

Unable to breach the door, Hercules forms a new strategy: he simply rips the entire top off the mountain, exposing the subterranean den to the unexpected daylight. Cornered and trapped, Cacus resorts to his only defense, belching out massive clouds of blinding, roiling smoke and dark fire from his jaws to enshroud the cave in a pitch-black smog.

The smoke provides absolutely no deterrence. Hurling himself directly into the fiery inferno, Hercules grabs the monster in a knotted chokehold and squeezes until Cacus’s eyes bulge out of his skull and his throat is drained of blood. The doors are then ripped off the cave, the gruesome corpse is dragged out by the feet, and the Arcadians are finally freed from their local tormentor.

Interpreting the Myth: Subversion vs. Propaganda

While the story is undeniably thrilling, Dave and Jeff ask a crucial interpretive question: why does Vergil include this massive digression for Aeneas to hear?

Jeff reads an excerpt from an article by Leo Trotz-Leibov, which suggests the episode is actually deeply subversive. Trotz-Leibov argues that Hercules’s brutal violence makes the reader question whether the founding of Rome and its imperial expansion are truly justified. By highlighting how “violence determines right,” the article claims Vergil is secretly casting doubt on Augustus Caesar’s own bloody rise to power.

Dave forcefully rejects this modern, subversive reading. He argues that modern scholars frequently attempt to force ancient authors into a 21st-century political mold. There is absolutely zero historical evidence to suggest Vergil was a secret dissident who hated the Augustan regime. After enduring seventy years of horrific, bloody civil war, the “Pax Augusta” was a genuinely welcome, celebrated achievement, not a target for poetic subversion.

Instead, both hosts prefer the traditional interpretation offered by the great Latinist Brooks Otis. Otis argues that Book 8 has one unified theme: Aeneas is the theos aner (the divine man) whose mission is to defeat impius furor (unholy, irrational madness). Vergil creates a perfect, tripartite historical parallel: Hercules defeats the savage Cacus in the past; Aeneas defeats the brutal Mezentius in the present; and Augustus defeats Mark Antony in the future. It is the ultimate Roman story of civilization (humanitas) triumphing over barbaric, bestial violence.

Sponsors: Fueling the Classical Renaissance

Before sharing the parting shot, Dave and Jeff take a moment to thank the fantastic sponsors who support the podcast.

The Gustatory Parting Shot

To officially close out Episode 108, Dave delivers a highly amusing Gustatory Parting Shot courtesy of the author Peter Mayle.

Mayle, a British businessman who moved to France to write the memoir A Year in Provence, offers a harsh critique of American eating habits. 

“The French don’t snack. They will tear off the end of a fresh baguette (which, if it’s warm, it’s practically impossible to resist) and eat it as they leave the boulangerie. And that’s usually all you will see being consumed on the street. Compare that with the public eating and drinking that goes on in America: pizza, hot dogs, nachos, tacos, heroes, potato chips, sandwiches, jerricans of coffee, half-gallon buckets of Coke (Diet, of course) and heaven knows what else being demolished on the hoof, often on the way to the aerobic class.”

Jeff and Dave laugh heartily at being sloshed through the dirt and called knuckle-dragging culinary savages by a British expat. Embracing his inner American, Jeff proudly declares that tomorrow morning will absolutely involve drinking a massive jerry can of coffee before heading to the gym.A special thanks goes out to Mishka the sound engineer, and to Scott Van Zen and Ken Tamplin for the blistering guitar riffs. Watch out for fire-breathing monsters, check your cattle pens, and keep taking in the classics. Valete!

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