Three graves are discovered on the frozen beach of an uninhabited Arctic island, and the mummified corpses inside may answer a centuries-old mystery of an expedition that was literally consumed by the cannibalistic insanity of its mutinous crew.

A frozen lake deep in the Himalayas melts once a year to expose hundreds of human bones and a centuries-old mystery of astonishing carnage, leaving experts to speculate if it was a single catastrophic event or something much more sinister.

Preserved in the ice of Mexico's highest peak, a group of climbers stumble upon the bizarre, mummified remains of a man in a pinstripe business suit; experts uncover possible drug cartel connections and a plane crash shrouded in secrecy.

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A top-secret military base hidden deep in the ice beyond the Arctic Circle is one of the Cold War's most elaborate cover-ups, and recently declassified documents reveal its deadly purpose, and the threat it might still pose to all humankind.

A salvage team discovers the mysterious remains of an enormous shipwreck near Cambridge Bay in the icy waters of the Canadian Arctic; experts investigate and uncover a cutting-edge vessel with links to one of the greatest polar explorers in history.

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Experts make a chilling new discovery when they unearth a 30,000-year-old zombie virus from an icy grave. If this ancient disease is successfully resuscitated back to life, it could cause a catastrophic global calamity.

After a 2,500-year-old mummy with fantastical tattoos is discovered in Siberia, locals report strange, cataclysmic events that point to an ancient curse. Using cutting-edge archaeology, experts reveal who this person was and if they've unleashed something sinister. Also, the remains of a rare infant woolly rhino.

Archaeologists discover a large metal object on an isolated island in the Bering Sea.

When strange towers of ice are found growing from in a barren, water-starved desert, experts speculate why these structures have uncanny similarities to extraterrestrial formations recently discovered on Pluto's alien landscape.

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Archaeologists discover human remains during an excavation of a fifth-century fort on the Swedish island of Oland; after further investigation, experts unearth 26 skeletons and uncover the site of an ancient massacre.

Climbers make a shocking discovery when they encounter the remains of two human bodies high atop New Zealand's Mount Cook; after a forensic investigation, a decades-old mystery reignites that could rewrite mountaineering history.

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An expedition on Europe's tallest mountain unearth a decapitated human body; experts uncover a mummified Russian WWII soldier near a wartime shelter.

A grim discovery in a Swedish lake reveals shocking ancient practices. Meanwhile, in the Canadian Arctic, the fossil of a previously unknown mammal is found.

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored.

Archaeologists in Russia find several mass graves, a World War II plane sits on a Canadian mountain, and cosmic rays in Antarctica stump experts.

Human remains are discovered high in the Ecuadorian Andes, while a strange earthquake-like event is investigated in Canada.

In Russia, 34,000-year-old graves are discovered. Meanwhile, a team attempts to locate a British World War II aeroplane that went missing in Iceland.

A mysterious volcanic island off the coast of Antarctica is explored, while the mummified remains of a teenage girl are found in the Peruvian Andes.

Mysterious industrial waste is discovered in an uninhabited part of Greenland. Meanwhile, strange mounds are found deep within the Arctic Circile.

A Kazakh farmer discovers ancient burial sites that may determine whether or not the legend of the Amazon women warriors is myth or reality. In the Italian Alps, a group of hikers explore long forgotten military infrastructure that points to the region's complicated and violent history. A shrine in the Indian Himalayas has long been said to be protected by supernatural powers, but strange markings on the temple reveal it was subject to an almost equally as powerful force. Palaeontologists discover a fossilized species unknown to science embedded in a rock hundreds of millions of years old.

A secret military base is discovered a few hundred miles from the North Pole. A man-made, ancient stone formation is found 120 feet below the surface of Lake Huron. A 1500 year old burial ground is discovered on the shores of the Baltic Sea. And in Russia's far east, a life-form that scientists think can live for thousands of years is discovered in the permafrost.