Clean report -

It seems that this didn’t occur to anybody until the turn of the 21st century, though. Up to that point, no one had really bothered to give Chankillo a thorough investigation. This all changed in 2001, when finally someone decided to take a closer look. But what did it mean that the insides of the buildings were strikingly clean? Photo Credit: David Edgar/Wikimedia Commons | CC BY-SA 3.0

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