Peru Travel: Machu Picchu engineering

The thick stone walls of Machu Picchu reveal the ingenuity of the Inca stonemasons who designed their cities to withstand the tests of time and the region's frequent tremors and earthquakes.

 

You can use this image on your blog or website, but please link and attribute: Views of Machu Picchu tours © Matthew Barker, Peru For Less 2009

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