Watch Cities of the Underworld online: Episode 11 Tomb of the Lost Mummies

When you think of Egypt, you think of the Pyramids, vast deserts and infamous leaders like Cleopatra. But there's more to the story. Although the city of Cairo was founded in 969 AD, the desert sands stretch back nearly four millennia. From the first ancient Egyptian pharaohs and their thirst for power, to invading Persians, Greeks, Romans, Arabs and Turks looking to conquer this mighty empire, modern Cairo's foundation is scarred by thousands of years of violent fighting, awesome feats of engineering, and crazed emperors. Journey from the Great Pyramids at Giza to the Valley of the Golden Mummies, as host Don Wildman explores four thousand years of evidence hidden deep beneath the vast desert. Don enters mazes of tunnels running beneath the first pyramid ever built, examines the remains of fortresses left behind by Muslims and Romans, and encounters hundreds of mummies that lurk in the underground to uncover Egypt's past.

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