Experts find out what the Vinland map - allegedly drawn in the 15th century - reveals about settlements in America prior to Christopher Columbus's arrival,
Experts analyze cryptic writing etched on the Turin Shroud - a piece of medieval linen cloth bearing the image of a crucified man - in an attempt to verify its origins.
Experts hope to unlock the secrets of the golden city of El Dorado by examining a 10in-long statue that may hold the key to the lost Amazonian civilisation.
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By what name was Secrets (2013) officially released in India in English?