Beneath our feet is a secret world - and you can visit it. The 50 underground adventures featured in this book are not just for intrepid potholers and other daredevils. Hidden beneath Britain are plenty of attractions open to everyone. This is the definitive guide to the best days out underground. From caves to nuclear bunkers, sewers to secret railways, as well as abandoned mines, ancient crypts and labyrinthine tunnels, these unique tourist attractions are a journey through Britain's hidden history going back thousands of years. Travel writer Peter Naldrett explores each location with evocative, light-hearted text that reveals the fascinating history of why it came to be constructed, or how it was first discovered. As well as information about facilities and accessibility, Peter also includes essential advice about how to get there and when to go. There are atmospheric full colour photographs throughout, and boxes that highlight precisely why you should visit, as well as things to look out for when you do. Days Out Underground has something to excite everyone, especially families - here's how you entertain the kids on those wet-weather weekends!