The three then become the Navarre Route, passing via the French town of Saint-Jean-Pied-de-Port and crossing the Pyrenees and the Spanish border by one path or another to Roncesvalles in the Spanish province of Basse-Navarre. Together they serve as the principal pilgrimage route across Spain, known as the Camino frances. The fourth French route, the via Tolosane, crosses the Pyrenees at a different point (Somport), becomes the Aragonese Way when it enters Spain, and joins the Camino frances further to the west.