Archaeologists Use Radar Mapping and Sound Tests to Locate an Ancient Inca Underground Tunnel in Peru Archaeologists had ...

Mimicking the contours of the range towering behind it, Sacsayhuamán sits at 12,142 feet above sea level. It was built during the reign of Sapa Inca Pachacuti, beginning in the 15th century ...

Archeologists have confirmed the existence of ancient tunnels which run under the famous city of Cusco in Peru. Cusco which is a UNESCO world heritage site is formerly the capital of the Inca empire.