Stone wall, Cuzco, Peru

I’m familiar (but none the less amazed) with the look of Cuzco’s famous mortarless Incan masonry (talk about a well-disciplined cultural offering!), the seams between the blocks at once organic and artificial. But whenever I see another image like this, I wonder what the seams look like on the inside—do the joints just go straight back? Do things get even more complex? “the wall,” by flickr user lo747, 13 March 2008 :: via Intelligent Travel Flickr Pool