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.
The Incan Temple of the Sun in Cusco has long been a visual and cultural jewel of the ancient empire ... They first dug trenches, and then supported them with stone walls and carved-beam ceilings.
Researchers used sound testing and a radar to identify the tunnels’ location and reveal that the walls, likely constructed ... perhaps in March or April.” Cusco is a UNESCO World Heritage ...