And on the frontiers of the lost empire ... "The Inca were the organizational geniuses of the Americas," says Stanish. Under Inca rule, Andean civilization flowered as never before.

"Land of the Four Quarters" or Tahuantinsuyu is the name the Inca gave to their empire. It stretched north to south some 2,500 miles along the high mountainous Andean range from Colombia to Chile ...

And if you see the extension of the Inca Empire, if you compare them in the map with the Aztecs, it’s like four of five times more than the other big empire in the Americas. You can measure the ...

In the mid- to late-16th century, the Inca empire—weakened by internal strife ... They then employed ground-penetrating radar to make a map of the tunnel. According to the Association of ...

"Land of the Four Quarters" or Tahuantinsuyu is the name the Inca gave to their empire. It stretched north to south some 2,500 miles along the high mountainous Andean range from Colombia to Chile ...