BenIreland commented Inside Nottingham's caves: Did the phrase 'the penny dropped'...

Nottingham's cave network is a labyrinth of history below our feet, with more than 500 known caves underneath the city. After the Post learned that the Discover Britain campaign included a walking route of Nottingham's caves, we took a closer look. It is one of hundreds of trails, walks and viewpoints in urban, coastal and rural locations across the country plucked out by the Royal Geographical Society. Tour guide Michael Stewart took us down beneath the Broadmarsh Centre in the city's...