Question: I've heard that there are stone walls on Easter Island that look very much like the Inca stone walls ... When they built the grass bridge, how did they send the rope from one side ...

Five centuries after the collapse of the Inca Empire, one bridge from their intricate road system remains. Every year, the ...

But among the holiest places in the empire ... Inca needed roads. When the landscape proved too inhospitable for stone, they used straw, constructing beautiful bridges like the Keshwa Chaca bridge ...