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.

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

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.

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 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.

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.

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.

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.

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.

The Donner Party's Lost Legacy: Artifacts like glass shards and a writing slate from the tragic Donner Party of 1846 have been recently uncovered in the Sierra Nevada.

Battlefield Beneath the Alps: In the Swiss Alps, a Roman dagger discovery reveals a 2,000-year-old battlefield where the Suanetes tribe fell to the Roman Empire.

The Giant Penguin Enigma: Mauro De Mauro's disappearance in Italy reveals remains in a Mount Etna cave, linked to mafia ties and a 1962 assassination.

The Patagonia Ice Dragon: A Dutch fluit shipwreck found in the Gulf of Finland reveals rare insights into 1600s maritime trade and naval architecture.

Ice Age Battlefield: A Swiss fisherman uncovers ancient Celtic relics in Lake Neuchatel, hinting at a violent Iron Age battle around 225 BCE.

Siberian Death Mask: A 1700-year-old death mask from Siberia reveals ancient cranial surgery, shedding light on advanced medical practices of the Tashtyk culture.

Frozen Secrets of Prehistoric Warfare: Floods in Uttarakhand raised fears of buried Cold War nukes, but scientists linked it to a glacier collapse and environmental impacts.

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.

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.