Drakelow Tunnels
United Kingdom · Europe

About
Drakelow Tunnels are a former underground military complex beneath the Blakeshall Estate north of Kidderminster, Worcestershire, covering 285,000 sq ft (26,500 m2), with a total length of around 3.5 miles (5.6 km). They were originally built as a Second World War shadow factory, and were developed during the Cold War to be a fall-back government centre.
Adapted from Wikipedia (CC BY-SA)。Photography via Wikimedia Commons.