The Peruvian government has come up with an emergency rescue plan to save the ruins of Machu Picchu from erosion and tourists. “The $132.5m (£70m) plan is to be studied by Unesco and the World Bank at a three-day meeting in Lima beginning on Saturday. Machu Picchu is the most visited archaeological site in Latin America. It has been a Unesco world heritage site since 1983, but the UN’s cultural organisation made it clear last year that if something were not done soon it would be put on the list of sites at risk.”