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Sunday, April 21

National Geographic How Geographic Re-Created Machu Picchu for New Map: "Based on photographs, close-up observations, and engineering calculations, the Wrights made a map showing the exact location of every building at the site and what type of roof it would have had. They identified five different styles, based on clues that came from details such as receptacles for beams in the walls, patterns of alignment, even drip channels cut into the rocks to collect water dripping off of roof overhangs." The map and illustrations will appear in the May issue of the magazine. Be sure to check the gallery of photos and drawings that explain the process.

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