Two new archeostations have opened in Rome, extending Line C and showcasing archaeological finds unearthed during more than a decade of construction after repeated delays and interruptions.Colosseo-Fori Imperiali sits roughly 32 meters beneath the Colosseum and already displays about 350 artifacts, wells dating from the fifth century B.C. to the second century A.D., a first-century dwelling and excavation videos, while Porta Metronia reveals a second-century barracks and frescoes that will be shown in a museum due to open in February.Roberto Gualtieri called the stops “full-blown tourist and cultural attractions,” engineers described the tunnelling as extraordinarily difficult and authorities say Line C — planned at roughly 29 kilometres with 31 stations and an estimated cost of about €7 billion — should be finished around 2035 with Piazza Venezia targeted by 2033.