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Standing more than 40 stories high, the Great Pyramid of Giza has towered over the hot, dry Egyptian desert for more than 2,500 years. In this book, one of the Seven Ancient Wonders of the World is explored. How was this massive structure created in a time before cranes and other heavy machinery? How did the thousands of pyramid builders live and work? And how are modern-day robots being used to explore tiny passages and mysterious shafts deep within this giant tomb?