Finally, the team made use of ground-penetrating radar to more accurately map out the tunnel ... treks to Machu Picchu, Cusco was the capital of the powerful Inca Empire in the 15th century ...

the famed “lost city” perched on a mountaintop 50 miles from Cusco. In the mid- to late-16th century, the Inca empire—weakened by internal strife—fell to the rule of invading Spanish ...

Rising from obscurity in Peru's Cusco Valley during the 13th century, a royal Inca dynasty charmed, bribed, intimidated, or conquered its rivals to create the largest pre-Columbian empire in the ...

But until then, the Inca Empire flourished. It didn't have writing, but it was an efficient military society, an ordered, productive and wealthy civilisation centred on Cusco in Peru. Its economy ...