Cloacina

Cloacina was a goddess who presided over the Cloaca Maxima ('Greatest Drain'), the main interceptor discharge outfall of the system of sewers in Rome.

Tatius instituted lawful marriage between Sabines and Romans, uniting them as one people, ruled by himself and by Rome's founder, Romulus.

The peace between Sabines and Romans was marked by a cleansing ritual using myrtle, at or very near an ancient Etruscan shrine to Cloacina, above a small stream that would later be enlarged as the main outlet for Rome's main sewer, the Cloaca Maxima.

[5][6][7] The small, circular shrine of Venus Cloacina was situated before the Basilica Aemilia on the Roman Forum and directly above the Cloaca Maxima.

The clearest show two females, presumed to be deities, each with a bird perched on a pillar.