There are many ways to explore Copper Canyon such as hiking, biking, driving or horseback riding. The most popular way is by train, the Chihuahua Al Pacifico Railroad, runs along the main canyon called Canyon Urique, between Chihuahua and Los Mochis, on the Gulf of California. The Chihuahua al Pacifico railroad began in the late 19th century. The revolution, lack of funding, and the overall difficulty of building a railroad over such terrain hindered its completion until 1961. The railroad comprises 405 miles of rails with 39 bridges and 86 tunnels.