Wooden beam found holding up city centre path
Archaeologists working on the Luas Cross City project have unearthed hundreds of forgotten cellars dotted around the city - including one where the path above was being supported by a wooden beam.
Meanwhile, ancient burial grounds and buildings were among the other finds by the team that is working alongside the builders constructing the new tram line.
The revelations about what lies under the city's streets came at a talk by project archaeologists at Dublin City Council's Wood Quay offices.
Emer Dennehy, an archaeologist with Transport Infrastructure Ireland (TII) explained that before excavating the Luas sites the team had identified "20 or 30 cellars" but after the digs, that number had jumped to 391.
The forgotten cellars are being located, excavated and examined before being filled with concrete in order to facilitate the new Luas line, work on which is due to finish in 2017.
The cellars have been found in a variety of conditions, with a plank of wood supporting the path above the ceiling of one cellar on Dominick Street.
TII principle archaeologist Maria Fitzgerald told the Herald that "entire streets are lined with these cellars" and that no one knows "what condition they are in".
"It is an issue. People don't even know that they are there as the cellars are cut off from buildings.
"The streets are definitely safer now that they've been filled in," she said.
The team also found a burial ground for victims of a cholera epidemic in the 1830s at Broadstone.
Meanwhile, an archaeologist with Rubicon Heritage Service said that five bodies discovered at College Green are far older, possibly from Viking or medieval times.
The bodies were found in unfurnished graves and were buried in a "south north orientation" which indicates a Pagan burial.
Other finds include buildings buried underground with slate roofs. Their exact history or purpose remains a mystery.