We return to our series of video swapcasts with Ben from UnchartedX, this time to look at Ollantaytambo, the Coricancha, and a site known as "The Temple of the Moon" in Peru.

  As always, Ben's footage is excellent, and we spend much of the show discussing details of the strange, rock-cut and apparently heavily damaged stonework, as well as the enigmatic megalithic work of Ollantaytambo and the Coricancha.   So little is known about the origins of these sites and structures, that all we can do is observe the details, ask questions, and wonder.