Mysterious tunnels sketched by Leonardo da Vinci in the late 1400s may have been found
Once only indicated through a sketch by Leonardo da Vinci from around 1495, concealed passageways have been discovered ...
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Archaeologists Followed a Sketch by Leonardo da Vinci. It Led to Secret Tunnels Under an Ancient Castle.
An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to exist. Ground-penetrating radar and laser scanning revealed that the ...