The Brazilian railway network has an extension of about 30,000 kilometers. It's basically used for transporting ores. The Argentine rail network, with 47,000 km of tracks, was one of the largest in the world and continues to be the most extensive in Latin America. It came to have about 100,000 km of rails, but the lifting of tracks and the emphasis placed on motor transport gradually reduced it. It has four different trails and international connections with Paraguay, Bolivia, Chile, Brazil and Uruguay. Chile has almost 7,000 km of railways, with connections to Argentina, Bolivia and Peru. Colombia has only about 3,500 km of railways.