Passenger trains are very limited in Mexico with only a few lines in operation in places like the Copper Canyon in the northern state of Chihuahua, that line is also known as the Chihuahua Pacific Railway [18] since its final destination is the Pacific coastal city of Tobolobampo in the state of Sinaloa. In the state of Jalisco there is also a line which travels from the state capital city Guadalajara to its final destination in the small town of Tequila, this is why this line is called the Tequila Express [19]. In the Yucatan Peninsula there is a line of passenger trains which runs from Villahermosa through Campeche, Merida, Playa del Carmen and its final destination being the city of Cancun, this train also runs through a few Mayan ruins including Chichen-Itza and this gives it its name of the Expreso Maya [20] which is Spanish for Mayan Express. Mexico City and Monterrey have subway service, and it might be possible to hop aboard freight cars in some parts of the country (if you happen to be an adventurer).