TO GO WITH AFP STORY Picture taken at the ex Humberstone saltpeter, near Pozo Almonte in the Atacama Desert in the Tarapaca Region some 800 km north of the Chilean capital, Santiago, on November 14, 2012. The site, a UNESCO World Heritage Site, is a ghost town that has been abandoned since saltpeter mining was halted ended there in the mid 20th century. AFP PHOTO/MARTIN BERNETTI