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HISTORY VAULT

Explorers use a sacred ancient Mayan temple code to search for an occult underworld engineered in Mexico; investigators in Britain discover the secret technology behind a life-size statue of Jesus Christ that came to life.

Ancient Discoveries

Secret Science of the Occult

The mummified crocodiles of Kom Ombo; using an X-ray on an ancient mummy; China's terra-cotta army; scientists solve a year-old murder using 15th-century forensics; virtual-reality techniques afford investigation of crucifixion.

Rituals of Death

A team of divers builds and tests a deep-sea diving suit; a time-traveling ghost ship; 16th-century war fleet.

Mega Ocean Conquest

Building a replica of a 2000-year-old jet engine; a weapon that can shoot around corners; a gun that is made from fruit; beating the ancient world's land-speed record.

Ancient Record Breakers

Martial artists wield six-foot-long steel swords in India; camels as weapons of war; armor made from paper were designed to stop arrows; 2000-year-old unmanned weapon.

Twisted Weapons of the East

Ancient Roman navy SEAL technique of capturing enemy ships from underwater; Roman war dog units; the Mastiff; the samurai sword; the Horro is designed to protect cavalryman from arrow fire.

Ancient Special Forces

Ski commandos battle through storms and snow drifts; a tiny army in the Egyptian desert defeats a major invasion force; the Bayeux tapestry; the Naftun.

Ancient Commandos

A secret manual explains how the Vietnamese defeated the United States in the 20th century and the Mongols 700 years earlier; King Mithridates; the invention of booby-traps and letter bombs; Spartacus revolts against the Roman Empire.

Riots and Revolutions

Leeches, an ancient medical cure; taking a reading from a torpedo fish in Spain; Incan trepanning; Roman battlefield surgery; using snake venom as medicine; England's Prince Henry V undergoes brain surgery to extract an arrow.

Gruesome Medicine

Ancient secret agents; fire beacons, horses and pigeons are used to transmit messages over thousands of miles; ancient spies use invisible ink made from human sperm and write messages inside raw eggs; Japanese ninjas use explosives.

Ancient Secret Agents

Investigating history's most impregnable fortresses; the castle that helped create Great Britain; Cappadocia's invisible underground defensive systems; Mayan killer bee castle defenses; the Roman siege of Alesia in Gaul.

The Ancient Mega-Fort

Ancient prototypes of the modern gun; an ancient manuscript has a recipe for tracer fire; mega-mortar; the bizarre "wind of the cannonball" phenomenon.

Guns 'N Ammo

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S6 E13 | Secret Science of the Occult