 Although they extended eastwards along the chain of the Apennines to the frontiers of the Arretines and the territory of Mutina (modern Modena) and Bononia (modern Bologna), the upper valley of the Macra about Pontremoli, including the area later known as Lunigiana where the Tuscan towns of Aulla, Fivizzano, Fosdinovo, Villfranca and Pontremoli are now found, and the adjoining Upper Garfagnana and Ligurian districts of Sarzana and La Spezia were their center.To oppose their inroads, the Romans generally made Pisae (modern Pisa) the headquarters of one of their armies, and from thence carried their arms into the heart of the mountains