Uncover the spine-tingling mysteries and eerie surprises that lurk right under your feet! In Secrets Underground, history buff Elizabeth MacLeod takes readers deep down, below the earth’s surface, and introduces them to a completely different world—sometimes terrifying, often baffling, and always fascinating. Discover: • the Civil War secrets carefully concealed in Organ Cave, West Virginia • the top-secret equipment that lies deep below Grand Central Terminal in New York City • how the Aztec city Tenochtitlan, the largest and most powerful city of its time in what is now North America, nearly disappeared without a trace • the abandoned ships buried beneath San Francisco that reveal the city’s history as a top destination for fortune seekers during the Gold Rush • the nuclear shelter the U.S. government kept hidden for decades underneath an exclusive resort in West Virginia called The Greenbrier. Guiding readers through these fascinating places, MacLeod reveals their long-kept secrets and deftly explains how these lost and hidden subterranean passages, spaces, and caves answer decades-old puzzles, help us understand our own past, and lead us to discover what life was really like in eras gone by.