Much of the country between the coast and the Ebro Valley is mountainous. Gipuzkoa and Biscay, on the coast, are separated from the rest of Spain by the lofty Cantabrian Mountains, while Navarre is oriented inland towards Castile. Economically important features include the iron ore deposits of Biscay, the concentration of industry around the largest city of Bilbao, the Port of Bilbao, and a land communication route with France around the western end of the Pyrenees.