In 1944, where Avenue Marechal Gomes da Costa was being built, a Roman

necropolis was discovered, in area where an alley connected Olivais to Poço de Cortes.
However, when a specialist in the history of Olisipo, Augusto Vieira da Silva, reached the site only two structures remained, and both had already been violated: a crypt excavated in the blue clay of Xabregas and an

inhumation grave.
The crypt was circular, with a 31-foot diameter, and 4 to 6 feet high. The base, walls and pillars sustaining the roof had been built in

opus caementicium and coated in

opus signinum. The pavement, about 5 inches thick, presented a small oval well in the centre (1.6 feet deep), and was used to collect water. The crypt was covered with large limestone slabs and there was a centred entrance, about 2.5 feet in diameter. Inside, the researcher found four inscriptions and a lioz

cremation urn.
The

inhumation grave, built in

opus incertum and with a base and roof in

lateres, was discovered near the crypt, already without any materials inside.
Part of this collection was preserved, on the site, under the new avenue. The

inhumation grave was dismantled, transported and reassembled in the Palácio das Galveias garden, where the remaining collection of epigraphs was also deposited, presently resting in the Museum of Lisbon.