Naples Metro Line 2 Campi Flegrei–Pozzuoli section stays closed over CO2 in tunnel

By The Metro Map newsroom · November 3, 2026, 14:16

According to Il Mattino, the Line 2 section between Campi Flegrei and Pozzuoli will stay closed for now because of CO2 in the tunnel.

The Campi Flegrei–Pozzuoli section of Line 2 of the Metropolitana di Napoli will remain closed, at least in the short term, according to Il Mattino. The tunnel has been shut since the earthquake of 31 July, and the Italian railway infrastructure manager RFI has said that the line will not reopen yet.

No solution presented by RFI

According to Il Mattino, the regional civil protection assessor Fiorella Zabatta said that RFI has not presented any solution to the carbon dioxide problem in the Line 2 tunnel. She said the region had worked for months, together with the regional transport assessor Mario Casillo, to identify possible solutions at the regional table. Zabatta added that the region had asked citizens, workers and students to be patient.

Zabatta stated that RFI did not follow up on the proposed solutions and did not set out a concrete path for reopening. The region expects an infrastructure manager to provide a clear operational plan and a firm timetable, which it said had not been provided.

Mayors leave the table

RFI communicated the closure during an inter-institutional meeting, after tests carried out inside the Monte Olibano tunnel. According to Il Mattino, the mayor of Pozzuoli, Luigi Manzoni, left the table in protest against RFI. Manzoni and other mayors of the Phlegraean Fields area said that they had been told the line would reopen, and that no firm date was now given.

The mayors said the closure continues to cause daily problems for commuters, workers, students and families. They asked that replacement services be adequate for passengers' needs. According to Il Mattino, RFI has planned works that are due to start in mid-December, and the mayors said these must resolve all the problems in the tunnel.

What passengers should know

For now, passengers on the Campi Flegrei–Pozzuoli section should expect no train service on Line 2 in that stretch. Il Mattino reports that the mayors have asked for replacement transport to be reliable, and no new reopening date has been confirmed in the information released so far.

Sources

CO? nella galleria Metro Linea 2 a Napoli, l'assessora regionale Zabatta: «Da RFI nessuna soluzione. Ne prendiamo atto» — Il Mattino — Napoli

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