Once only indicated through a sketch by Leonardo da Vinci from around 1495, concealed passageways have been discovered ...

Aging tunnels are becoming a growing concern, but there aren’t enough experts to inspect and maintain them. To solve this ...

The Zika virus builds tiny tunnels, called tunneling nanotubes, to stealthily transport material needed to infect nearby ...

Railway engineers have uncovered a "labyrinth" of historic tunnels and secret rooms hidden beneath an active railway station.

Engineers have discovered a "labyrinth" of historic tunnels and rooms underneath a Wiltshire railway station. Network Rail and South Western Railway (SWR) staff discovered the hidden network ...

An "elephant pit" and tunnels are said to be hidden beneath one famous Liverpool building. Since opening in 1905, thousands have visited the famous Liverpool Olympia on West Derby Road.