Trigarium on February 27 and March 14, also celebrated for Mars, may have been held at the Trigarium as well, and possibly events for the "ludi tarentini", which became the Saecular Games. The area may, however, have been only a practice field for these events. An underground altar to the divine couple Dis Pater and Proserpina was located in the Tarentum, near or adjacent to the Trigarium. Dis was the Roman equivalent of the Greek god Plouton (Latinized as Pluto), who abducted Proserpina (Greek Persephone or Kore "the Maiden") in his chariot to the underworld to become his bride and queen.
Orcus Orcus Orcus () was a god of the underworld, punisher of broken oaths in Italic and Roman mythology. As with Hades, the name of the god was also used for the underworld itself. In the later tradition, he was conflated with Dis Pater. Orcus was portrayed in paintings in Etruscan tombs as a hairy, bearded giant. A temple to Orcus may have existed on the Palatine Hill in Rome. It is likely that he was transliterated from the Greek daemon Horkos, the personification of Oaths and a son of Eris. The origins of Orcus may have lain in Etruscan religion.