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 ...
Downtown Oklahoma City was headed underground in 1973. The million dollar network of tunnels that would link more than a dozen buildings and connect with existing tunnels would be quite the ...
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 ...
London (AFP) – Behind a blue door in a narrow London passage lies a little-known network of tunnels deep underground, once home to British spies and a secret long-distance telephone exchange.
The tunnels, which are 1.6km long and tall enough in parts to fit a double-decker bus, lie under Holborn in central London. They were dug by hand starting in late 1940, when German planes were ...
Behind a blue door in a narrow London passage lies a little-known network of tunnels deep underground, once home to British spies and a secret long-distance telephone exchange. Thirty metres (100 ...
The tunnels, which are 1.6km long and tall enough in parts to fit a double-decker bus, lie under Holborn in central London. They were dug by hand starting in late 1940, when German planes were bombing ...