Can you crack the secrets of the ancient world? This hi-lo collection explores 12 fascinating mysteries--from lost cities and cursed tombs to giant stone monuments and legendary kings. With middle school content at a 4th-grade reading level, each story blends real archaeological discoveries, puzzling clues, and wild theories that will spark curiosity and keep tweens turning pages. Perfect for readers who love history, adventure, and the thrill of the unknown.The accessible layouts feature self-contained chapters, a table of contents, captions, glossary, index, and extra book and website resources.