This is a map of sites where Parma prosciutto crudo (raw ham) DPO (or DOP in Italian) is produced in Italy. The small capital of Prosciutto di Parma is Langhirano.
Province of Parma of Emilia-Romagna region is well-known for production of 4 main food products: Parmigiano Reggiano, Prosciutto di Parma, Salame Felino and tomato.
This photo is published by the sight: http://www.italianqualityexperience.it/