 Exports of the marquisate included wine, rice, hemp and walnut oil.Imported from France to Saluzzo were mainly fabrics, brocade and horses, but since the little marquisste had no outlet on the sea, the tunnel gained a fundamental importance for the import of salt from Aigues-Mortes.Thus, the Monte Viso Tunnel became soon, as in many other crossings of the territory of northern Italy, a crucial element of a commercial route of extreme importance, so much so that from 1482 The Revello's gabelle recorded an annual transit of over 20,000 sacks of salt, in addition to a variety of other merchandise.