FILE PHOTO: A view of the surface of the salt flat at Salar del Hombre Muerto, which is 4,000 meters (13,123 feet) above sea level and north of the Argentine province of Catamarca August 6, 2010. REUTERS/Enrique Marcarian/File Photo
FILE PHOTO: A view of the surface of the salt flat at Salar del Hombre Muerto, which is 4,000 meters (13,123 feet) above sea level and north of the Argentine province of Catamarca August 6, 2010. REUTERS/Enrique Marcarian/File Photo