Discover the dark, hidden and mysterious side of British history. From cliff-top castles and historic inns to moonlit ruins and underground realms, Lost Chambers & Subterranea explores secret passages, escape tunnels, priest holes, sliding panels, concealed doors, smugglers' caves, dungeons, and other places for hiding and imprisonment. The book includes regional maps and detailed instructions so readers can find, visit, and even stay in over 500 named historic locations, including 483 fully profiled entries. With award-winning photography and engaging travel writing, this beautifully designed guide is perfect for those seeking real-life historic adventures, as well as anyone interested in walking, archaeology, and British folklore.