Going underground in Nottingham

Nottingham is a unique city.  Proudly sitting atop a thick layer of easily worked Triassic sandstone, it conceals a vast warren of caves, some dating back to medieval times, every one of them hewn by hand and more than 800 of which have been fully explored and catalogued.  Today, a number of the major cave systems, such as those underneath Nottingham Castle or preserved as a tourist attraction below Broadmarsh, are open to the public, while others are still being put to good use by some of the city centre’s impressive and varied range of excellent pubs. ...