Copper Canyon in the context of "Sierra Madre Occidental"

Chihuahua, officially the Free and Sovereign State of Chihuahua, is one of the 31 states which, along with Mexico City, are the 32 federal entities of Mexico. It is located in the northwestern part of Mexico and is bordered by the states of Sonora to the west, Sinaloa to the southwest, Durango to the south, and Coahuila to the east. To the north and northeast, it shares an extensive border with the U.S. adjacent to the U.S. states of New Mexico and Texas. The state was named after its capital city, Chihuahua City; the largest city is Ciudad Juárez. In 1864 the city of Chihuahua was declared capital of Mexico by Benito Juárez during the Reform War and French intervention until 1867. The city of Parral was the largest producer of silver in the world in 1640. During the Mexican War of Independence, Miguel Hidalgo was executed on July 30, 1811, in Chihuahua city.

Although Chihuahua is primarily identified with its namesake, the Chihuahuan Desert, it has more forests than any other state in Mexico, aside from Durango. Due to its varied climate, the state has a large variety of fauna and flora. The state is mostly characterized by rugged mountainous terrain and wide river valleys. The Sierra Madre Occidental mountain range, part of the continental spine that also includes the Rocky Mountains, dominates the state's terrain, and is home to the state's greatest attraction, Las Barrancas del Cobre, or Copper Canyon, a canyon system larger and deeper than the Grand Canyon. The state also has the largest crystal cave in Mexico known as the Naica cave discovered in 2001. Chihuahua is also home to the archaeological site of Paquimé in Casas Grandes that was created by the people of the Mogollon culture of Northern Mexico and is recognized as an UNESCO World Heritage site. Chihuahua is the largest state in Mexico by area, with an area of 247,455 square kilometres (95,543 sq mi), it is slightly larger than the United Kingdom, and slightly smaller than Wyoming, the tenth largest US state by area. The state is consequently known under the nickname El Estado Grande ('The Great State' or 'The Big State').

Tourism holds considerable significance as a pivotal industry within Mexico's economic landscape. Beginning in the 1960s, it has been vigorously endorsed by the Mexican government, often heralded as "an industry without smokestacks," signifying its non-polluting and economically beneficial nature.

Mexico has consistently ranked among the world's most frequented nations, as documented by the World Tourism Organization. Second only to the United States in the Americas, Mexico's status as a premier tourist destination is underscored by its standing as the sixth-most visited country globally for tourism activities, as of 2017. The country boasts a noteworthy array of UNESCO World Heritage Sites, encompassing ancient ruins, colonial cities, and natural reserves, alongside a plethora of modern public and private architectural marvels.

Los Mochis (Spanish pronunciation: [los ˈmotʃis]) is a coastal city in northern Sinaloa, Mexico. It serves as the municipal seat of the municipality of Ahome. As of the 2010 census, the population was 362,613, which was 61 percent of the municipality's population.

Los Mochis is the western terminus of the Chihuahua-Pacific Railroad (El Chepe), which passes through the scenic Copper Canyon. This railway was approved by President Porfirio Díaz as a trade route linking the cattle markets in Kansas City with the nearest port on the Pacific Ocean, Topolobampo.