What on Earth?

A massive tsunami hundreds of feet high that never touches land; a secret underground base in China; an image from space may have revealed the location of the Garden of Eden.

First seen from space in 1965, the Eye of the Sahara is a beautiful 25 mile structure, but how it formed remains a mystery. And are extraordinary clouds emanating from an island in the Indian Ocean evidence of a terrifying new weather weapon?

A possible smoke screen over North Korea worries military analysts while an amateur archaeologist makes an extraordinary discovery with the help of a satellite image; has this image revealed not one but two forgotten pyramids in Egypt?

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Evidence of human activity is found in strange times and places, and a new perspective on a biological activity known since the nineteenth century.

Major natural anomalies and varied human activities are investigated.

We investigate two examples of men at war, and two engaging with water, but another vision is in the eyes of the beholders, and the last phenomenon is a severe natural event.

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Strange spots near the Grand Canyon may hold clues to the legendary treasure of a notorious bandit. Satellite images could explain desert ruins rumored to be an entrance to an underworld. A city-size chunk of ice suddenly disappears in Antarctica.

Strange black holes appear near Egypts ancient pyramids, and new evidence points to a disturbing conclusion. Ruins in Peru suggests that the Inca people knew far more than previously thought. A mysterious red swarm invades a beach in India.

Investigators find a new clue about the missing Malaysia Airlines flight that disappeared in 2014. An astronaut spots something strange in the Sahara Desert. A mysterious orange sludge invades a remote village in Alaska.

A dagger sealed in King Tuts tomb for more than 3,000 years is made of a metal that seems to have extraterrestrial origins. A massive swastika is found in the desert near Roswell, NM. Satellites hunt for the worlds most wanted man, Joseph Kony.

A sinister giant swastika appears in a forest in Germany. A strange pattern is etched into the desert near the famous Nazca lines, but archaeologists dont know who put it there. Mysterious markings are spotted in an isolated corner of Antarctica.

A giant letter Z is carved into a Mexican hillside, evoking the mark of a legendary outlaw. A strange sighting in Germany points to secrets from the Cold War. Massive, blood-red marks in China prompt fears of a violent government crackdown.

An amateur archaeologist stumbles open strange symbols scratched into the Kazakhstan Desert; CIA surveillance photographs show what looks like a giant Star of David on the island of Cuba; and a lake in the Brazilian rain forest that turned bright pink.

New evidence could lead to the discovery of an ancient civilization.

Strange images from Colombia could lead researchers to a legendary city.

A young boy uses satellite images to uncover lost cities of the Maya.

Strange mounds in Transylvania might pinpoint the location of the tomb of the bloodthirsty tyrant believed to have inspired Dracula. A mysterious ancient city is discovered on a coral reef. Images of a plane crash sets off a hunt for a drug lord.

A ghost ship with links to the mob suddenly appears on a California beach; strange markings could be a coded message that reveals a plot to overthrow the Queen of England; a lake believed to have magical healing powers holds clues to life on Mars.

A strange forest of razor-shape stones could be home to an undiscovered Hobbit-like humanoid species; when a man-made island mysteriously appears off the US coast, new evidence points to secret government experiments into psycho-chemical warfare.

A strange lake in Transylvania is the home of an abandoned village and a terrifying secret. When an labyrinth is discovered on an island once home to an ancient Greek civilization, experts investigate if it was the legendary home of the Minotaur.

An abandoned megacity in a remote jungle might be the home of an ancient treasure and a dark secret; when a mysterious circular stone structure is discovered in Scotland, experts investigate whether its the fabled Round Table of King Arthur.

New evidence might finally identify the hiding place of the billion-dollar Nazi gold train; a discovery of a long-lost settlement rewrites the history of the Vikings in North America; a blood-red river in Siberia points to catastrophic pollution.

Man-made islands are spotted near a North Korean missile facility. When something unexpected is found in a remote desert, experts investigate a lost city of giants. A strange discovery in Siberia could reveal a mission to the center of the earth.

Experts investigate a glowing lake reported to turn things into stone. A mysterious structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant. A dark conspiracy could be at work in the Australian outback.

New discoveries lead investigators to a crypt rumored to hold the Ark of the Covenant. When great white shark is killed, experts suspect an mysterious ocean monster. Strange markings in the desert might be a tribute to an ancient spider god.

A ghost ship is found abandoned on a remote island thats home to one of the worlds last uncontacted tribes. A strange labyrinth in Sicily might have a sinister connection to the Mafia. New evidence reveals a mysterious military compound in Russia.

Something strange in the Himalayas could be evidence of a top-secret CIA program to turn monks into killer agents; cutting-edge science helps experts investigate the truth behind the mysterious anomaly.

A satanic symbol that points to an army of the dead in Siberia; a massive stone giant in a remote desert; evidence of a Russian doomsday device right on Americas doorstep; cutting-edge technology helps experts answer sinister mysteries from space.

A fleet of sunken ships that point to ghosts, cannibals, and bloodshed in early America; strange arctic holes that NASA cant explain; near Area 51, mysterious alien structures straight out of Star Wars.

Hundreds of shipwrecks in the middle of a desert in Africa. A ghost town where hundreds of its inhabitants have mysteriously died. Something strange in North Korea. Cutting-edge tech helps experts answer these sinister mysteries from space.

Evidence of a mysterious 5,000-year-old structure suddenly appears in Ireland. A top-secret machine that can see back in time. A satanic pentagram in the snow that points to witchcraft in the New World.

The worlds most dangerous threats are in top-secret locations all over the planet, and using cutting-edge technology, experts reveal the truth behind these sinister mysteries from space.

When satellites spot a mysterious structure in North Korea, experts investigate if this sinister evidence points to a looming nuclear threat, and using cutting-edge tech, they reveal dark secrets from this strange place.

When a sinister cave is discovered in a remote corner of Iceland, experts uncover a secret underworld tunneling to unknown depths, and using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.

When an strange structure is discovered in the Gobi Desert, experts investigate if this mysterious site could reveal the whereabouts of lost treasure, which might change everything we know about Genghis Khan and the Mongol warriors who once lived here.

At a mysterious site in the Gobi Desert, experts have discovered a monster graveyard, and this groundbreaking find contains the treasures of the alien beasts that once lived in this strange world.

When instruments on the International Space Station suddenly malfunction every time it passes over a mysterious site in the Atlantic Ocean, experts investigate if this eerie behavior is more than just a tech glitch, but a prophecy of global doomsday.

When an island off the coast of Mexico suddenly disappears, government officials scramble to find an explanation; cutting-edge technology might reveal if the strange place was destroyed by a foreign power or if it existed at all.

When satellites spot anomalies in the unexplored Amazonian jungle, experts wonder if theyve discovered relics of a lost civilization; an on-the-ground investigation reveals a dark truth thats more sinister than ever imagined.

After satellites spot an anomaly at Egypts oldest pyramid, experts uncover a long-lost labyrinth that could lead them to the darkest secrets of Imhotep, the mysterious high priest who built this strange complex.

When an extreme drought hits Spain, the ruins of a long-lost civilization suddenly emerge, and using cutting-edge technology, experts investigate evidence of ancient cannibalism.

Crop circles spotted on an island in the Mediterranean might not be from aliens, but from a threat closer to home: Nazis; new discoveries help experts uncover who made them and for what sinister purpose.

Experts suspect a lost pyramid in China could be a secret military base.

The remains of an abandoned settlement high in the mountains of Peru could be an ancient Roman village, leaving experts to speculate if the Romans visited the Americas centuries before Columbus; if so, it could point to long-lost gold.

Satellites capture two strange patterns in the desert next to Area 51.

Experts follow evidence of a Nazi base in the Amazons to a dark discovery.

Images reveal an alien substance in the land of the Aztecs.

Images reveal a forgotten war-torn fortress in the swamplands of Louisiana.

A mystery in Hawaii points to human sacrifice and a shape-shifting god.

When experts spot what appears to be an abandoned city in the Caspian Sea, they investigate declassified Cold War evidence to reveal an Atlantis-like city built by the Soviets; what they find exposes its long-lost secrets.

Satellite images capture a giant symbol mysteriously carved into the expanse of Australias Great Victoria Desert; an investigation reveals a secret nuclear weapons-testing cover-up by the British government with numerous aboriginal casualties.

Satellites capture mysterious stone objects across the Arizona mountains.

Satellites capture rocks in the shape of a fingerprint on a Swedish island.

Aerial imaging captures a complex of ancient Roman buildings in Yorkshire.

Satellites capture a mysterious collection of ghost towns in Belarus.

Satellites capture a bizarre industrial complex in desert of Kazakhstan.

Satellites capture bizarre structures on the Greek island of Kefalonia.

Satellite images capture a triangular castle-like tower located on the Mediterranean island of Sardinia; experts investigate the relics of a declining ancient civilization that may have suffered a celestial catastrophe.

Drone images capture oddly shaped towers in a forest clearing near Moscow.

Drone images capture enormous holes scattered along the Dead Sea coastline.

Satellite capture a bizarre pattern obscuring an eastern Atlantic island.

Satellite images capture a large compound of abandoned structures that are overgrown with vegetation in Indiana; experts investigate and uncover a derelict WWII munitions factory that played a crucial role in US military history.

Satellite images capture a mysterious fortification concealed beneath a patch of woodland in the remote stretches of Norfolk, England; experts investigate rival royal families and a lost castle that was destroyed during a medieval blood feud.

Satellite images capture an enormous X shape mysteriously carved with precision in the remote Nevada desert; experts investigate a military emergency landing field linked to one of the most astonishing test programs in aviation history.

Satellite images capture a mysterious group of pyramid-shaped structures in the arid, desert landscape of Arizona; experts investigate a highly controversial research facility designed to prepare humanity for life on another world.