In Roman mythology

Roman mythology

Roman mythology is the body of traditional stories pertaining to ancient Rome's legendary origins and religious system, as represented in the literature and visual arts of the Romans...

, Cacus was a fire-breathing giant monster and the son of Vulcan

Vulcan (mythology)

Vulcan , aka Mulciber, is the god of beneficial and hindering fire, including the fire of volcanoes in ancient Roman religion and Roman Neopaganism. Vulcan is usually depicted with a thunderbolt. He is known as Sethlans in Etruscan mythology...

.

Mythology

Cacus lived in a cave in the Palatine Hill

Palatine Hill

The Palatine Hill is the centermost of the Seven Hills of Rome and is one of the most ancient parts of the city...

 in Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, the future site of Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

. To the horror of nearby inhabitants, Cacus lived on human flesh and would nail the heads of victims to the doors of his cave. He was eventually overcome by Hercules

Hercules

Hercules is the Roman name for Greek demigod Heracles, son of Zeus , and the mortal Alcmene...

.

According to Evander

Evander

In Roman mythology, Evander , also spelled Euander, was a deific culture hero from Arcadia, Greece, who brought the Greek pantheon, laws and alphabet to Italy, where he founded the city of Pallantium on the future site of Rome, sixty years...

, Heracles stopped to pasture the cattle he had stolen from Geryon

Geryon

In Greek mythology, Geryon , son of Chrysaor and Callirrhoe and grandson of Medusa, was a fearsome giant who dwelt on the island Erytheia of the mythic Hesperides in the far west of the Mediterranean. A more literal-minded later generation of Greeks associated the region with Tartessos in southern...

 near Cacus' lair. As Heracles slept, the monster took a liking to the cattle and slyly stole eight of them - four bulls and four cows - by dragging them by their tails, so as to leave no trail. When Heracles awoke and made to leave, the remaining herd made plaintive noises towards the cave, and a single cow lowed in reply.

Angered, Heracles stormed towards the cave. A terrified Cacus blocked the entrance with a vast, immoveable boulder, forcing Heracles to tear at the top of the mountain to reach his adversary. Cacus attacked Heracles by spewing fire and smoke, while Heracles responded with tree branches and rocks the size of millstones. Eventually losing patience, Heracles leapt into the cave, aiming for the area where the smoke was heaviest. Heracles grabbed Cacus and strangled the monster, and was lauded throughout the land for his act. According to Virgil in Book VIII of his Aeneid, Heracles grasped Cacus so tightly that Cacus' eyes popped out and there was no blood left in his throat: "et angit inhaerens elisos oculos et siccum sanguine guttur."

Another version of the myth states that Cacus made the cattle walk backwards so they left no trail. Heracles drove his remaining cattle past a cave, where Cacus was hiding the stolen ones, and they began calling out to each other. Alternatively, Caca, Cacus' sister, told Heracles where he was.

In the Roman tradition, Hercules founded an altar after he killed Cacus. This was the Ara Maxima, where later the Forum Boarium

Forum Boarium

The Forum Boarium was the cattle forum venalium of Ancient Rome and the oldest forum that Rome possessed. It was located on a level piece of land near the Tiber between the Capitoline, the Palatine and Aventine hills. Here, too, is where the first bridges were built...

, the cattle market of Rome, was held. Hercules had temples

Roman temple

Ancient Roman temples are among the most visible archaeological remains of Roman culture, and are a significant source for Roman architecture. Their construction and maintenance was a major part of ancient Roman religion. The main room housed the cult image of the deity to whom the temple was...

 in the area, including the still extant Temple of Hercules Victor

Temple of Hercules Victor

The Temple of Hercules Victor or Hercules Olivarius is an ancient edifice located in the Forum Boarium close to the Tiber in Rome. It is a monopteros, a round temple of Greek 'peripteral' design completely encircled by a colonnade...

. It is believed that a large stone in the nearby church of Santa Maria in Cosmedin

Santa Maria in Cosmedin

The Basilica of Saint Mary in Cosmedin is a minor basilica church in Rome, Italy. It is located in the rione of Ripa.- History :The church was built in the 8th century during the Byzantine Papacy over the remains of the Templum Herculis Pompeiani in the Forum Boarium and of the Statio annonae, one...

 is what is left of the Ara Maxima.

In later literature

• In the Inferno
  Inferno (Dante)
  Inferno is the first part of Dante Alighieri's 14th-century epic poem Divine Comedy. It is followed by Purgatorio and Paradiso. It is an allegory telling of the journey of Dante through what is largely the medieval concept of Hell, guided by the Roman poet Virgil. In the poem, Hell is depicted as...
  
  poem of the Divine Comedy by Dante Alighieri
  Dante Alighieri
  Durante degli Alighieri, mononymously referred to as Dante , was an Italian poet, prose writer, literary theorist, moral philosopher, and political thinker. He is best known for the monumental epic poem La commedia, later named La divina commedia ...
  
  , Cacus is depicted as a centaur
  Centaur
  In Greek mythology, a centaur or hippocentaur is a member of a composite race of creatures, part human and part horse...
  
   with a fire-breathing dragon
  Dragon
  A dragon is a legendary creature, typically with serpentine or reptilian traits, that feature in the myths of many cultures. There are two distinct cultural traditions of dragons: the European dragon, derived from European folk traditions and ultimately related to Greek and Middle Eastern...
  
   on his shoulders and snake
  Snake
  Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...
  
  s covering his equine back. He guards over the thieves in the Thieves section of Hell
  Hell
  In many religious traditions, a hell is a place of suffering and punishment in the afterlife. Religions with a linear divine history often depict hells as endless. Religions with a cyclic history often depict a hell as an intermediary period between incarnations...
  
  's Circle of Fraud.