What at first glance appears to be a jumble of boulders was probably a workshop where expert stonecutters practiced their trade. (One chunk of granite has been carved into almost-finished steps.) Another large stone, known as Serpent Rock, has snakes etched into its top surface.

BBC: What most people miss at Machu Picchu

Now at first glance one might think that all of this goes a bit too far, dragging politics in where it has no proper place.

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