Experts Investigate a mysterious formation in the Antartic ice.

Experts investigate mysterious formations on a Mediteranian Island.

New data from NASA satellites reveal a sunken lost continent in the Indian Ocean.

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler.

Experts investigate an eye shaped lake containing a mysterious floating island.

Experts question the purpose of an artificially created island constructed by the military.

A deadly plague eats away at a Rhode Island forest.

At the height of the cold war, the CIA is confounded by a powerful new weapon dubbed the Caspian Sea Monster.

An eerie green vortex of death swirls in the Baltic sea.

Experts investigate a river surrounded by death.

Experts investigate a seemingly alien lake, that may reveal secrets about Martian life.

A lightning bolt scars the Australian outback.

A ghost ship appears on a California beach.

The search for Nazi treasure leads to a secret underground bunker.

A military satellite witnesses the disappearance of a Russian airliner over an ISIS danger zone.

Investigators uncover an ancient forge from the dark ages.

When a perfect triangle is found in the middle of a unpopulated portion of Australia, experts begin to wonder whether or not the design is man made.

What could be the cause of this excessive gravitational pull? A volcano, or perhaps something else?

These Transylvanian burial mounds may be the resting place of Vlad Dracula, "The Impaler."

Remains of an ancient city, rumored to be haunted, litter the pacific island of Pohnpei.

When the Quickbird Earth Observation Satellite spots an entire fleet of abandoned boats in the middle of the desert, researchers attempt to come up with an explanation.

Satellite photos show a strange circle beneath the ice of an ancient lake. Further analysis shows that these mysterious rings appear each year. What are they?

Satellite images reveal a strange hole in Antarctica. After scientists rule out whirlpools and sinkholes, they have to look back in time to find the answer.

An image taken by GOME shows a strange, pulsing force spreading across North America. What on Earth is it?

Scientists are baffled when a seemingly huge tsunami headed straight for Hong Kong suddenly disappears in the water.

A commercial satellite imager spots something strange in the middle of a vast desert. It looks like an airport runway, but there are no planes. No government claims ownership of this strange place.

The search for Nazi treasure leads to a secret underground bunker.

A satellite captures an image that uncovers the entrance to an underground complex. What is being built there?

A mysterious shape in the water leads people to believe a giant monster is roaming Loch Ness. Is that really what’s going on though?

Experts investigate a river surrounded by death.

Ghost lakes have existed for millions of years, but they just recently started showing themselves. Geophysicist Helen Fricker explains how scientists are moving forward with this discovery.

A military analyst notices a familiar military plane in the middle of a Chinese city. The question is, is the plane real or just a model?