Protesters blocked access to the Incan site in Peru over a new ticketing system. Tourists have been evacuated, but there could be more unrest. Here’s what to know. By Mitra Taj Hundreds of tourists ...
NARRATOR: High in the Peruvian Andes, there's an ancient city called Machu Picchu. It is a ruin that defies explanation. Who were the mysterious people who built it and why did they build it here?
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