Culture Ministry officials said on Oct. 16 that medieval pottery shards in the city of the dead, or necropolis, show the area may have been inhabited by the living during the Dark Ages after being used for centuries for burials during the Roman period.

It is not yet clear who was buried in the ancient cemetery, but archaeologists at the still partially excavated site believe at least some of the dead were freed slaves of Greek origin.

A separate dig in the north of the city has turned up the tomb of a nobleman who led Rome's legions in the second century A.D.

The mausoleum was covered in mud during a flood of the river Tiber, which collapsed most of the monument but helped preserve exquisite decorations, marble columns and inscriptions from plunderers and the ravages of time.

Writings at the site led experts to identify the tomb as belonging to Marcus Nonius Macrinus, one of the closest aides and generals of the Emperor Marcus Aurelius during his campaigns against Germanic tribes in Northern Europe.

Archaeologists will keep working at the digs to make them accessible to visitors. Officials plan to build a museum next to Macrinus' tomb, which will also offer a virtual reconstruction of the site.