the 3 window temple from below, day 4 - machu picchu

Bingham said this might be the temple where the first Inca was born. He said Machu Picchu might be the origin of the Incas. The argument was a bit weak if he just base his proof on the 3 windows temple here corresponding to the traditional Inca legends (in the legend, 3 brothers started their journey from a 3 windows temple).