What on Earth?

Modern imaging technology and analysis from military and intelligence professionals, as well as leading scientists, investigate mysteries from strange geological occurrences to weird man-made structures as seen by more than 4,000 orbiting satellites.
Mystery of the Fallen Star
S12 E2

Aerial archaeologists use laser imaging to capture a distinct star-shaped pattern carved into the marsh of a Florida swamp; experts investigate and reveal a lost Civial War fort linked to an extraordinary community with a tragic past.

Indiana's War Factory
S12 E3

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.

Turkey's Lost Terror Dome
S12 E4

Aerial drone imaging captures a circular man-made structure that appears to be centuries-old in the remote forests of Aydin, Turkey; experts investigate a lost ancient amphitheater with a history steeped in gladiatorial bloodshed.

Blood Feud of Gresham Castle
S12 E5

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.

The Boneyard of Arizona
S12 E6

Satellite images capture miles of aircraft precisely arranged in the vast Arizona desert; experts investigate the largest aircraft storage facility on Earth and the rotting remains of a defining moment in Cold War history.

Nevada's Mystery Marking
S12 E7

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.

Ghost Ship of Ireland
S12 E8

A ghost ship appears overnight on the shores of Ireland; it may help shed light on the fate of vessels claimed by the most notorious patch of ocean on earth.

Secrets of Biosphere 2
S12 E9

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.

Arctic Hunters of Norway
S12 E10

Aerial archaeologists capture a series of mysterious dots buried beneath the remote, frozen landscape of Finnmark, Norway; experts investigate and reveal revolutionary hunting techniques developed by the oldest surviving Norwegian tribe.

Secret Soviet Spacecraft
S11 E1

Satellite images capture a bizarre industrial complex in the remote desert expanse of Kazakhstan; experts investigate and uncover a massive hangar containing the most expensive spacecraft in the history of Soviet-era space exploration.

Doomsday Lair of Greece
S11 E3

Satellite images capture bizarre structures fenced within a remote mountaintop complex on the Greek island of Kefalonia; experts investigate and discover a network of massive satellites linked to a hidden NATO doomsday communications bunker.

Mystery of the Welsh Mine
S11 E4

Satellite images capture monumental ruins surrounded by bizarre feather-shaped structures on a Welsh mountaintop; experts investigate a hidden tunnel containing the remains of an abandoned slate mine with an exploitative and deadly past.

Circles of the High Kings
S11 E6

Satellite images capture two conjoined circular structures embedded in the landscape of Ireland; experts investigate an ancient site linked to legendary figures and the elusive hunt for the Ark of the Covenant.

Russia's Lightning Lab
S11 E7

Aerial drone imaging captures oddly shaped industrial-sized towers mysteriously situated in a forest clearing near Moscow; experts investigate a lost Soviet era military compound and the development of a catastrophic electromagnetic weapon.

Poland's Secret Nazi Compound
S11 E8

Satellite images capture a series of enormous zigzagging patterns carved into the remote woodlands of Poland; experts investigate a clandestine Nazi base linked to a doomed operation that played a pivotal role in the downfall of WWII Germany.

Holes of Dead Sea Destruction
S11 E9

Aerial drone imaging captures clusters of enormous, perfectly round holes scattered along the coast of the Dead Sea in Israel; experts reveal a history of destructive water diversion linked to massive sinkholes devouring the region.

Ancient Rome's El Dorado
S11 E10

Aerial archaeologists capture bizarre, spider-like markings etched deep into the mountains of Northern Spain; experts investigate an ancient site that contained one of the largest and most important gold mining operations of the Roman Empire.

Australia's Nuclear Desert
S10 E1

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

Viking Warrior Invasion
S10 E2

Satellite images capture bizarre groups of circular structures in the remote forests of Derbyshire, England; experts investigate and uncover ancient burial mounds linked to a Viking invasion that changed the course of English history.

Mystery of Apache Mountain
S10 E3

Satellite images capture mysterious stone structures spread across high elevations of the Arizona mountains; experts investigate and uncover ruins of a 19th century Apache fortification linked to the most treacherous migrant route in U.S. history.

Code of the Viking Witch
S10 E5

Satellite images capture a bizarre pattern of rocks in the shape of a large fingerprint on a remote Swedish island; experts investigate and uncover a mysterious labyrinth with links to ancient Viking black magic and dark, mystical rituals.

Mystery of the Cursed Forest
S10 E6

Satellite images capture a bizarre pattern of large concentric circles formed in a remote English forest; experts investigate and uncover a top secret experimental bomb testing site critical to WWII British weapons development.

Secrets of the Roman Occult
S10 E7

Aerial drone imaging captures a sophisticated complex of lost, ancient Roman buildings in Yorkshire.

Legend of Moonshine Forest
S10 E8

Satellite images capture a gigantic oval among a bizarre grid pattern that's carved into the dense forests of New Jersey; experts investigate and reveal a landscape linked to infamous prohibition activity and a prolific WWI munitions factory.

Nuclear Ghost Towns
S10 E9

Satellite images capture a mysterious collection of sprawling towns that appear to be completely unoccupied in Belarus; experts investigate and uncover a horrendous state-sanctioned cover-up responsible for claiming thousands of innocent lives.

Lair of the Living God
S10 E10

Satellite images capture a bizarre, cone-like structure perched on the summit of a mountain range in Turkey; experts uncover one of the most extraordinary engineering projects of the ancient world linked to the legacy of a living deity.

Curse of the Amazon Nazis
S9 E1

When investigators spot strange anomalies in the Amazon jungle, the discovery stokes rumors of a long-lost Nazi base in the Americas.

Epstein's Forbidden Temple
S9 E2

Satellite evidence of a strange building on a mysterious island owned by Jeffrey Epstein points to something sinister; experts use cutting-edge technology to investigate why it was built and what goes on here.

Gate to the Viking Gods
S9 E4

New evidence reveals dozens of bizarre circular structures buried in the remote hills of Norway; an expert investigation uncovers a mysterious burial ground that may have been a portal to the Viking spiritual realm.

America's Swamp Castle
S9 E5

Satellite images capture bizarre structures in the remote and inhospitable swamplands of Louisiana; experts investigate a forgotten war-torn fortress with a mysterious connection to the sinking ruins of a classified military installation.

Lost City of the Vampires
S9 E6

Satellite images reveal a long-lost village buried in a dense forest; archaeologists investigate and uncover a mysterious gravesite with the remains of decapitated skeletons and possible evidence of vampire burials.

Temple of the Island Eater
S9 E7

Satellites capture evidence of a mysterious structure in a remote and rocky area of Hawaii; when experts investigate, what they find could point to human sacrifices and the wrath of a shape-shifting god.

Horror of Dead Man's Island
S9 E8

Experts investigate a gigantic ship that emerges from the sands of a strange island; what they find reveals evidence of a horrific Viking massacre.

Stalin's Secret Atlantis
S9 E9

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.

America's Secret Apocalypse
S9 E10

Satellite images reveal a mysterious pattern of six perfect circles hidden in the desert landscape of New Mexico; experts investigate and uncover evidence of catastrophic military testing deliberately erased from history.

Zombietown USA
S8 E1

Satellite images capture evidence of an abandoned town hidden in the American wilderness, and as experts analyze this new evidence, they reveal what this strange place has to do with a top-secret military plan to battle an army of the undead.

Nazi Crop Circles
S8 E2

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.

Island of Alien Ooze
S8 E3

Satellite images capture a volcanic island that suddenly appears in the Pacific Ocean, and when NASA scientists arrive to investigate, they are baffled to find it is home to a primordial slime.

Americas' Lost Romans
S8 E5

The remains of an abandoned settlement high in the mountains of Peru could be an ancient Roman village; experts speculate if the Romans visited the Americas centuries before Columbus.

The Damned of Devil's Island
S8 E6

Mysterious satellite images lead an archaeologist to investigate a cemetery on Devil's Island, the notorious penal colony in the tropics of South America; evidence of grisly executions that fueled a shark feeding frenzy.

Nazi Occult Temple
S8 E7

Satellites capture a temple-like Nazi structure hidden deep in the forests of Poland, leading an expert to investigate and uncover a tale of terrifying rituals.

Curse of King Arthur
S8 E9

When satellites spot a strange, 2,000-year-old structure in Wales, some suspect it holds a secret connection to King Arthur; using modern-day technology and ancient texts, experts investigate new leads that could point to the mythical Round Table.

Nazi Doomsday Forest
S7 E1

When mysterious structures are discovered deep in a remote forest, experts investigate if this strange site was the long-lost birthplace of a top-secret Nazi project that produced some of the deadliest weapons the world had ever seen.

Bermuda Triangle of Space
S7 E2

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.

Curse of Phantom Island
S7 E4

When an island off the coast of Mexico suddenly disappears, government officials scramble to find an explanation.

Armageddon USA
S7 E5

When the people of a thriving Midwestern town suddenly disappear, they leave behind an eerie ghost town with a dark secret; experts use cutting-edge tech to investigate if the mysterious exodus could be evidence of a freak natural disaster.

Amazon's Secret Nightmare
S7 E6

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

Ghost Town Terror
S7 E7

When satellites discover a strange abandoned city frozen in time, experts investigate what caused the people to disappear overnight; using cutting-edge tech, they follow fresh leads to uncover if this mysterious city could be home to a dark secret.

Imhotep's Lost Labyrinth
S7 E8

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

Lost Tombs of the Gold Kingdom
S7 E9

Strange satellite images taken above the Nile Valley could point investigators to long-lost relics buried in an unexplored city of the dead; what they find could reveal new secrets of Kush, a once-mighty kingdom of untold gold and treasure.

Hunt for Atlantis
S7 E10

New satellite evidence shows a mysterious spiral structure from space, and experts think it could be the lost city of Atlantis; using cutting-edge technology, they investigate the truth behind this odd phenomenon.

Ruins of Cannibal City
S7 E11

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.

World's Deadliest Threats
S6 E1

The world's most dangerous threats reside in top-secret locations all over the planet; experts use cutting-edge technology to reveal the truth behind sinister mysteries from space.

Monsters of Diamond Desert
S6 E2

An abandoned ghost town in a remote desert with a dark past; when a strange facility is spotted in Russia, experts investigate if it's hiding evidence of alien life; cutting-edge tech reveals new clues to these sinister mysteries from space.

North Korea Death Star
S6 E3

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.

Aliens of the Infinity War
S6 E4

When a strange pattern appears in a field, experts wonder if its an extraterrestrial response to a message sent to an alien star cluster in 1974, and using cutting-edge science, they uncover its true origin.

The Cave to Hell
S6 E5

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.

Curse of Genghis Khan
S6 E7

When a 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 known about Genghis Khan and the Mongol warriors.

The King at Roswell
S6 E8

When a strange, red plane is discovered near the sight of the Roswell UFO incident, experts wonder if the aircraft has Nazi or extraterrestrial origins, and their investigation reveals new secrets about one of America's most famous faces.

Treasures of Monster Graveyard
S6 E9

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

CIA Killer Monks
S5 E1

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.

Monsters at Fort Madness
S5 E2

Alien monoliths haunt the coast of England; an obliterated jungle points to a brutal narco gold rush; evidence of a strange blood-red creature emerging from the deep.

Satan in Siberia
S5 E3

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 America's doorstep; cutting-edge technology helps experts answer sinister mysteries from space.

Curse of the Ice Zombies
S5 E4

Zombie reindeer haunting the mountains of Norway; strange circles in the sand by a secret U.S. military base; a giant streak in the Arctic pointing towards alien life; cutting-edge technology helps experts answer these sinister mysteries from space.

Ghost Fleet of Cannibal Bay
S5 E5

A fleet of sunken ships that point to ghosts, cannibals and bloodshed in early America; strange arctic holes that NASA can't explain; near Area 51, mysterious alien structures straight out of "Star Wars."

Finding Jack the Ripper
S5 E6

New discoveries from space give experts new clues in the hunt for Jack the Ripper; a strange object crash-lands in Antarctica, experts speculate it could be an alien visitor.

Blood in the Garden of Eden
S5 E8

A site that could be the Garden of Eden hides a deadly secret; when a gateway to hell suddenly opens, experts investigate where it leads; a mysterious shipwreck could be an infamous Soviet KGB pirate ship.

Phantoms in the Chamber of Secrets
S5 E9

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.

Cannibal Death Pit
S5 E10

A strange circular forest next to a notorious cannibal site; when an eerie crater is spotted in Siberia, experts uncover if it could be evidence of Nikola Tesla's doomsday device; cutting-edge tech helps experts answer these sinister mysteries.

Dracula's Tomb
S4 E1

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.

Fountain of Youth Found?
S4 E2

A strange structure shaped like a giant shark might point the way to a lost civilization's fountain of youth; a massive hurricane heads toward Florida but something unexpected is in its eye; bizarre marks across the eastern US leave experts baffled.

Mafia Ghost Ship
S4 E3

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.

Mystery of Fang Forest
S4 E5

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

Village of the Damned
S4 E6

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler; new data from NASA satellites might reveal a sunken lost continent in the Indian Ocean; a pit of bodies suggests fears of a zombie nightmare.

The Minotaur's Lair
S4 E7

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

The Lost City of Goliath
S4 E8

A lost city near Jerusalem might have been the home of Goliath; bizarre underwater formations might point to a top-secret US weapons testing facility; a strange sighting in the Arctic could be a lost Nazi relic.

Finding King Arthur
S4 E9

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 it's the fabled Round Table of King Arthur.

Treasures of Valhalla
S4 E10

Evidence of human sacrifice for the Viking god Odin; shedding new light on Genghis Khan.

Hitler's Lost Gold
S4 E11

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.

Temple of Blood
S4 E12

An ancient man-made volcano might reveal buried treasure and bloody human sacrifice; when NASA discovers a strange pattern in the Arctic ice, experts investigate if it has alien origins; a mystery in the Sahara might have a sinister explanation.

North Korea's Forbidden Islands
S4 E13

Man-made islands appear near a North Korean missile facility; an unexpected find in a remote desert leads experts to a lost city of giants; a strange discovery in Siberia suggests a secret mission to the center of the Earth.

Cannibals in the Ghost City
S4 E14

An abandoned city in the African jungle may be haunted by the malevolent spirits of cannibals; Mount Vesuvius shows signs of an awakening, and the mafia could be to blame; experts investigate Adolf Hitler's secret Nazi UFO program.

Curse of Medusa
S4 E15

Researchers investigate a strange glowing lake reported to turn things into stone; a structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant.

Nazi Stonehenge
S4 E16

A mysterious Stonehenge-like structure in Russia may have links to the Nazis; experts uncover clues to a mega-tsunami with the power to devastate the United States; a huge lake appears in the Sahara overnight.

Hunting the Ark of the Covenant
S4 E17

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

Forbidden City of Inca Gold
S4 E18

Treasure hunters have searched for a lost Incan city of untold wealth for a century, but new technology might finally locate its riches; a strange mountain in Egypt sparks an investigation into Cleopatra's gems and the tomb of Alexander the Great.

Ghost Ship of Hell Island
S4 E19

An abandoned ghost ship appears on a remote island that holds one of the world's 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.

Mayan Armageddon: The New Evidence
S4 E20

New evidence might reveal how the Mayans vanished; when scientists investigate an abandoned settlement, they discover traces of ritualistic drug binges from the ancient world; a mysterious symbol in the desert points to a sex cult of millionaires.

Lost Treasure of the Grand Canyon
S3 E1

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; city-size chunk of ice suddenly disappears in Antarctica.

Mystery in the Outback
S3 E2

A giant carving of a strange creature suddenly appears in the Australian Outback; mysterious bright green lights illuminate the seas around Thailand; top-secret activity discovered at Iran's nuclear facility.

Riddle in the Ruins
S3 E3

Strange black holes appear near Egypt's ancient pyramids; Incan ruins in Peru suggest that the Inca people were more advanced than thought; a mysterious red swarm invades a beach in India.

Stonehenge of the Holy Land
S3 E4

Legends of ancient giants surround a mysterious monument in the Middle East; a bright pink lake could point to a strange, undiscovered new species; when a young boy disappears in a sand dune, satellite images help with the investigation.

Did We Find Flight 370?
S3 E5

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.

Gateway to Eden
S3 E6

A buried monument offers new evidence about one of the Bible's greatest mysteries; an ominous shadow engulfs the Pacific Ocean; scientists have trouble explaining a strange lake that's shaped like a perfect circle.

Dagger of Tutankhamun
S3 E7

A meteorite dagger found in the tomb of King Tut; a massive swastika found in the desert near Roswell, N.M.; using satellites to hunt for Joseph Kony.

Raiders of the Holy Lance
S3 E8

A heavily armored force takes over one of Syria's most ancient archaeology sites, prompting fears that its relics are being stolen; tanks appear to be facing off in Antarctica next to an unworldly object; a water reservoir in LA suddenly turns black.

Inside El Chapo's Escape
S3 E10

Satellite images reveal how El Chapo escaped from a high security prison in Mexico; mysterious patterns in the Australian outback and the Kalahari Desert spark a major scientific investigation; a giant black stain appears in a war-torn area of Iraq.

Ghost of Zorro
S3 E11

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.

Curse of the Sea Monster
S3 E12

A strange mass breaches surface of an ocean near Antarctica, sparking rumors of a mythological sea monster; an area of the US-Mexico border becomes an international mystery; ancient rock carvings in a remote mountain range depict unearthly beings.

Strange Symbols in the Desert
S3 E13

An amateur archaeologist finds strange symbols scratched into the Kazakhstan desert; CIA surveillance photographs show what appears to be a giant Star of David on the island of Cuba; a lake in the Brazilian rain forest turns bright pink.

Bloody Secret of the Lost City
S3 E14

A vast structure buried in the sands near the legendary city of Petra points to a bloody past; when terrorists kidnap more than 200 schoolgirls in northern Nigeria, rescuers use satellites to track them down.

Lost Empire of the Amazon
S3 E15

New evidence could lead to the discovery of an unknown ancient civilization in the Amazon rainforest; a strange photo reveals a massive Arctic canyon buried beneath the ice; an unidentified submarine is spotted in a North Korean shipyard.

Siberian Death Pit
S3 E16

A massive chasm appears in a remote part of the Siberian forest.

Hunt for El Dorado
S3 E17

Strange images from the jungles of Colombia could lead researchers to the legendary city of El Dorado; a bright green swirling spiral appears in the seas of the Persian Gulf; a massive complex suddenly appears in Myanmar.

Mystery of the Mummy Desert
S3 E18

New evidence could reveal the remains of an ancient Roman city thought to be lost forever; strange images from a remote and empty desert could explain the mysterious mummies found there; an apocalyptic sandstorm swallows the Middle East.

Forbidden Cities of the Maya
S3 E19

A young boy makes international headlines when he uses satellite images to discover lost cities of the Maya; satellite images might point to a modern-day genocide; trees in China seem to be spelling out a sinister message.

The Curse of Merlin
S3 E20

The myth of Merlin is associated with an arrangement of stones in northern France; satellite images might finally explain this ancient riddle; Investigators uncover something mysterious buried beneath the Gulf of Mexico.

Secret of Doomsday Mountain
S2 E2

Satellites find American stealth technology deep inside China; an unidentified cloud swamps America's skies; something very large is lurking beneath Loch Ness.

Lost City of the Kalahari
S2 E3

Satellites locates strange spiral markings in the remote African desert; a weird deadly black blob is threatening the Florida Keys; something large is found deep beneath the ice of Antarctica.

Who Built Supervillain Island?
S2 E4

A satellite finds a set of large arrows in the badlands of the American west; a blood red waterfall stains Antarctica's snows; a plague of massive holes in the Siberian landscape.

Curse of the Lost Kingdom
S2 E5

The face of Christ is discovered in a field in Hungary; a photo that claims to show who shot down a passenger jet in Ukraine; a sinister shape in the mountains of Afghanistan that leads investigators to a hidden genocide.

Hidden Tomb of Genghis Khan
S2 E6

A strange structure is discoverd in Mongolia; bizarre rings in Spain could lead to the lost city of Atlantis; a large floating island is on a collision course with New Zealand.

Lost City of Gold
S1 E2

Strange barren rings in the Namib Desert; an island the size of Manhattan disappears without trace; a lost city in the middle of the Amazonian jungle.

Finding Sodom
S1 E4

NASA astronaut Mike Barratt explains photographing a strange ring in the ice on the world's oldest and most mysterious lake from the International Space Station; more rings on Lake Baikal have been seen.

North Korea Is Burning
S1 E5

A possible smoke screen over North Korea concerns military analysts; an amateur archaeologist makes a fantastic discovery of not one but two forgotten pyramids in Egypt.