sentences:  The concession authorised Bayard to build a railway from the current location of Napoli Centrale station outside the old walls of Naples along the Bay of Naples to Nocera Inferiore on the Sorrentine Peninsula, a distance of , with possible extensions to Salerno and Avellino, both through mountainous country.The line was built of wrought iron rails mounted on large cubic stone sunk into the ground (as the system of using wooden sleepers to distribute weights had not been invented) and gauge was maintained from time to time with transverse bars.Three locomotives were imported from Longridge and Co of England