TO GO WITH AFP STORY Picture of the interior of the theatre of the ex Humberstone saltpeter, near Pozo Almonte in the Atacama Desert in the Tarapaca Region some 800 km north of the Chilean capital, Santiago, taken 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