Hypogeum of Vibia  The Hypogeum of Vibia is part of a small complex of pagan burial chambers in Rome which were constructed along the Via Appia in the late 4th century CE. It is named for the burials of a woman named Vibia and her husband Vincentius, a priest of the Thraco-Phrygian god Sabazios. The hypogeum is notable for the paintings that show the deceased figures in mythological scenes and in the underworld, and for their accompanying inscriptions. Numerous other decorated tombs and inscriptions were found in the complex. The Hypogeum of Vibia is located in the Appio-Latin quarter of Rome (QIX). The Via Appia is well known for the many funerary monuments, tombs, catacombs, and other hypogea which line the road. This hypogeum is located on the left side of the street, approximately 1.5 kilometers outside the Aurelian Walls, where the Via Appia passes through the Porta San Sebastiano as it leaves the boundaries of the ancient city. It is about 250 meters north-east from the large Catacomb of Callixtus complex, which is found on the opposite side of the Via Appia and in which many popes and saints were interred in the 2nd-4th centuries. There are many other small hypogea and tombs neighbouring the Hypogeum of Vibia, as well as the notable early Christian catacombs of San Sebastiano and the large Catacombs of Praetextatus a short way down the Via Appia. Another nearby landmark is a plaque across the street, marking where the Via Appia's second milestone would have been in antiquity. The entrance to the catacombs can be accessed now at the address 101 Via Appia Antica, but in ancient times it would have been reached by a lane that branched off from the main road. This catacomb was constructed in approximately 350 CE, and includes three main galleries which were carved out of the bedrock. The passageways of the catacomb diverge from a 25 meter stairway that leads down from the original entrance towards a well. The main burials are located approximately 7-9 meters below the surface level, and to the south-west of the stairway to the well. The gallery with the burials of Vibia, Vincentius, and Caricus is roughly at the center of the complex.