Conservationists that advise UNESCO's World Heritage Committee say that tourism, landslides and fires are threatening Machu Picchu, the top tourist attraction in Peru. UNESCO may be prompted to add the famed Inca citadel to its endangered World Heritage site list. More than 800,000 people visit the site each year. "Machu Picchu was never made for lots of people," said Luis Lumbreras, an independent, Lima-based archaeologist. "If we put tourists with boots that are jumping, running, climbing the walls, etcetera, that's the danger."
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