An aerial picture shows part of the route of the Arica-La Paz railway during its centennial commemoration, in Chile on May 13, 2013.

A conductor waits for passengers in Arica on May 13, 2013. Passenger services stopped running on the line in 1996, according to the BBC, but a special train ran to mark the railway's centenary.

Passengers ride on the Arica-La Paz railway during its centennial commemoration on May 13, 2013.

Passengers wait to board a train in Arica on May 13, 2013.

An aerial view of the brine pools and processing areas of the Soquimich lithium mine on the Atacama salt flat, the largest lithium deposit currently in production, in the Atacama desert of northern Chile, on Jan. 10, 2013.

A worker protects his face from the sun as he inspects machinery at the Rockwood Lithium plant on the Atacama salt flat, the largest lithium deposit currently in production, in the Atacama desert of northern Chile, on Jan. 8, 2013.

A view of samples of lithium carbonate processed from the Rockwood Lithium mine on the Atacama salt flat, the largest lithium deposit currently in production, in Antofagasta, northern Chile, on Jan. 14, 2013.

An aerial view of the brine pools and processing areas of the Soquimich lithium mine on the Atacama salt flat, the largest lithium deposit currently in production, in the Atacama desert of northern Chile, on Jan. 10, 2013.

Overview of a mining camp on the Salar del Hombre Muerto, or Dead Man's Salt Flat, an important source of lithium at around 13,123 feet above sea level on the border of the northern Argentine provinces of Catamarca and Salta, on Oct. 28, 2012.

Braulio Lopez of Galaxy Resources lithium mining division carts halite concentrate at the Salar del Hombre Muerto, or Dead Man's Salt Flat, an important source of lithium at around 13,123 feet above sea level on the border of the northern Argentine provinces of Catamarca and Salta, on Oct. 28, 2012.

A llama stands next to a cactus growing on Incahuasi Island above the Uyuni salt lake, which holds the world's largest reserve of lithium, located at 11,995 ft above sea level in southwestern Bolivia, on Nov. 7, 2012.

A worker from Galaxy Resources lithium mining division puts on a mask before going to work at the Salar del Hombre Muerto, or Dead Man's Salt Flat, an important source of lithium at around 13,123 feet above sea level on the border of the northern Argentine provinces of Catamarca and Salta, on Oct. 28, 2012.

Laboratory technicians Gabriela Torrez and Bernabe Apaza analyze brine samples at the lithium pilot plant on the southern edge of the Uyuni salt lake, which holds the world's largest reserve of lithium, located at 11,995 ft above sea level in southwestern Bolivia, on Nov. 5, 2012.

Tourists prepare for a picnic on the Uyuni salt lake, which holds the world's largest reserve of lithium, located at 11,995 ft above sea level in southwestern Bolivia, on Nov. 7, 2012.

A woman takes a picture with her mobile phone of the Copahue volcano spewing ash on Dec. 22, in Caviahue, Neuquen province, Argentina.

A member of the Chilean team "Eolian 3", prepares his solar car during the first stage of the race.

The Chilean team Eolian 3 competes during the first stage of the Atacama Solar Challenge.

A student is arrested by riot police during a protest to demand Chilean President Sebastian Pinera's government to improve public education quality in Santiago, on Aug. 28.

Students clash with riot police during a protest to demand Chilean President Sebastian Pinera's government to improve public education quality in Santiago, on Aug. 28.

Students march during a protest in demand of President Sebastian Pinera's government to improve public education quality in Santiago, on August 8.

A public bus is seen in flames during a demonstration against the government to demand changes in the public state education system in Santiago on August 8. Chilean students have been protesting against what they say is profiteering in the state education system.

Students clash with a riot police vehicle during a demonstration against the government to demand changes in the public state education system in Santiago, August 8. Chilean students have been protesting against what they say is profiteering in the state education system.

A group of actors perform a woman being tortured during a protest against the premiere of a documentary about the late Gen. Augusto Pinochet in Santiago, Chile, on Sunday. Police used tear gas and water cannons to try to disperse hundreds of anti-Pinochet demonstrators against the documentary about the run-up to his dictatorship years and casting him as a national hero who saved Chile from communism.

Supporters hold pictures of Gen. Augusto Pinochet during the screening of a documentary in a downtown theater. The film casts Pinochet as a national hero who saved Chile from communism and who died victimized by leftists who accused him of embezzlement and human rights crimes.

Demonstrators holding posters with the portraits of missing or killed relatives stand a protest in front of the Caupolican Theatre. A ceremony honoring Pinochet has triggered a firestorm of controversy, pitting the right to free speech against relatives of regime victims who would like to see the event banned. Some 4,000 supporters of the general are expected at a Sunday screening of a new pro-Pinochet documentary at Teatro Caupolican in Santiago celebrating his military dictatorship.

Supporters chant slogans during the screening of a documentary on Gen. Augusto Pinochet in a downtown theater in Santiago. The film casts Pinochet as a national hero who saved Chile from communism and who died victimized by leftists who accused him of embezzlement and human rights crimes.

Antiriot police a subdue a person during a protest against a tribute to the late Chilean dictatorship Augusto Pinochet. Thousands of protestors gathered in downtown Santiago to protest against the Eleven September Corporation showing a documentary praising Pinochet.

British artist Julian Beever, specialized in pavement drawings, wall murals and realistic paintings, works on his piece in Santiago.

British artist Julian Beever, specialized in pavement drawings, wall murals and realistic paintings, takes a picture of his work on May 3, 2012 in Santiago. Beever produces a painting with colour chalks showing a fortune wheel, during the Creative Days activities in Chile.