Rome's Rich Past Stalls Metro Line Expansion

Hadrian's amphitheater is one discovery made while building Rome transit line.

ByABC News
October 22, 2009, 7:38 AM

ROME, Oct. 22, 2009 — -- For years now, the frustrated citizens of modern Rome have struggled with clogged traffic as they await the construction of a new subway line through the heart of the city, the Metro C.

But instead of futuristic tunneling and construction, all they have seen since 2006 are shifting archaeological excavations, cordoned off with "Metro C-Archeological Investigation" banners that pop up monthly in different areas of the city.

Scientists excavate in the hopes of finding, well, nothing -- or at least nothing of importance. Only then can the Metro move forward.

Rome sits on layers and layers of history, the earliest dating back to the Stone Age. Archaeology has always been the nemesis of modern public works.

Rome has only two other existing Metro lines. The Metro B was built in 1955. The Metro A opened in 1980 but took some 20 years to build, the delays caused by archaeology.

The new Metro C line will run east to west through the very heart of what used to be ancient Rome, and while the actual tunnels for the Metro are not a problem -- they will be dug 100 feet down, well beneath any archaeological treasures -- the stations, exits and air ducts present major problems in many locations. Archeologists are trying to pinpoint the areas on downtown thoroughfares and squares where the least damage will be done.

One of the originally planned stops in downtown Rome on Largo Argentina, the heart of ancient Republican Rome, had to be scratched completely.

Archaeological excavations have been under way for more than a year in another important square in the center of Rome, the large and traffic-crazed Piazza Venezia, where a major Metro station must go. In ancient times, it was part of the Roman Forum.

"The station at Piazza Venezia must be built," Rome archaeological superintendent Angelo Bottini told the Italian newspaper La Repubblica last year, "but we need to work out where the clash between the line and antiquity will cause the least damage."

The digging of an open-air pit -- 75 feet in diameter -- at the center of Piazza Venezia for the main part of the subway station has been OK'd by archaeologists, even though it will cause the "total elimination of any pre-existing archaeological evidence," said Bottini in a report. It must be painful for an archaeologist, he said, but it is necessary for progress.

A case in point: When they excavated other areas of the piazza looking for relatively "sterile" areas, archaeologically speaking, where subway exits could be built, they came across what is considered the most important metro-related discovery yet.

Hadrian Gets in the Way

As they dug through down through layers of modern, Renaissance and Medieval remains to the level of ancient Rome, they found what looked like a grand stairway made with sheets of granite and antique yellow marble. Across the way, the remains of a matching stairway -- the steps long, shallow and deep -- led archaeologists to the conclusion that they were looking at the seats of a covered rectangular amphitheater, a place where plays, speeches and debates were held by the city's poets, scholars and politicians.

Archaeologist Roberto Egidi, who directed the excavation, said research in texts by ancient sources suggests they have found the Emperor Hadrian's "Athenaeum" -- an auditorium ancient writers say he built at his own expense on his return from Palestine around A.D. 135.

So the Metro entrance had to be moved. It is now being planned a few yards away where all they have found is a Roman sewage system and some Roman tabernae or shops -- finds that in any other city except Rome would spark quite some excitement.

A number of other entrances are planned around the square but digging at those locations has yet to begin.