Season 4
8 episodes · Sep 3, 2007
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S4E1Mummies of the Clouds
Sep 3, 200760m500 years before the Inca, a band of warriors called the Chachapoya built the greatest stone monument in the Americas. It's three times the size of Egypt's largest pyramid, yet they disappeared without a trace.
S4E2The Hunley: New Revelations
Sep 10, 200760mThe Confederate Army, in an attempt to turn the tide of the Civil War, launched a new and daring weapon--a forty-foot submarine. The H.L. Hunley, armed with a primitive torpedo, destroyed a mighty Union warship, yet its crew never made it home.
S4E3Kings of the Stone Age
Sep 17, 200760mThe giant stone heads of the Olmec have amazed and mystified archaeologists for more than 150 years.
S4E4Pirates: Terror in the Mediterranean
Sep 24, 200760mIn a new expedition, Kara Cooney and Charles Ingram look for evidence of the Barbary Pirates at the bottom of the Mediterranean Sea.
S4E5God's Gold (1)
Oct 1, 200760mJoin the search for golden artifacts from Jerusalem's Temple, stolen by the Romans 2,000 years ago.

S4E7Timbuktu
Oct 22, 200760mFor centuries, Europeans heard legends of a mythical city in the heart of the Sahara, the source of endless caravans of gold, but it took 500 years to find.
S4E8Angkor Wat: The Eighth Wonder
Oct 29, 200760mTravel deep into the heart of the Cambodian jungle to discover a magnificent stone temple that was built on a scale unparalleled in human history.