Peru's most treasured archaeological site, Machu Picchu, is due to be formally re-opened after it was closed for two months. Heavy rains and landslides at the end of January destroyed rail access to the 15th Century Inca ruin – the most visited site in Latin America. Ninety percent of Peru's tourist revenue comes from the Cuzco region, where Machu Picchu's two-month closure meant the loss of around 60,000 tourists.