Season 4
28 episodes · Nov 10, 2019
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- S4E1
Mysteries in the Alien Desert
Nov 10, 201945mThe Nazca Lines are mysterious symbols that have been carved into the Atacama Desert more than a thousand years ago. How and why were they created?
- S4E2
Alcatraz's Hidden Secrets
Oct 11, 201945mAlcatraz is one of the most famous prisons in the world. Experts investigate its remarkable engineering secrets and why it was so hard to escape from.
- S4E3
Mysteries of the Ice Mummy
Dec 29, 201945mThe 'Iceman' is the world's oldest and most perfectly preserved mummy. Cutting-edge forensic technology may unearth the mummy's darkest secrets.
- S4E4
Nero’s Lost Palace
Dec 24, 201945mThe Emperor Nero built an astonishing palace in the heart of Rome. Now using cutting-edge technology, experts investigate if he burnt the city for the building.
- S4E5
Curse of the Seventh Wonder
Dec 1, 201945mThe Lighthouse of Alexandria is one of the world's original Seven Wonders. Experts investigate its many secrets - did it hold a superweapon?
- S4E6
Dead Sea Scrolls: The Dark Truth
Dec 29, 201945mThe Dead Sea Scrolls in Israel are the oldest biblical texts. New discoveries might finally reveal the hidden meaning behind these manuscripts.
- S4E7
Pompeii’s Evil Twin
Dec 8, 201945mThe sunken town of Baiae remains frozen in time, lying on the seabed of the Bay of Naples. Now, marine archaeologists investigate its fascinating secrets.
- S4E8
Finding Sparta’s 300
Dec 22, 201945mThermopylae was the site of an iconic ancient battle. Legend says that in 480BC, 300 Spartan warriors died there - experts reconstruct the lost battlefield.
- S4E9
Empire State Building: The New Secrets
Nov 17, 201945mExperts use cutting-edge technology to investigate one of the wonders of the modern world. They reveal mysteries hidden in its foundation.
- S4E10
Egypt’s Buried City
Aug 23, 202045mExperts use cutting-edge technology to investigate a lost city buried in the Sahara. Archaeologists are uncovering the city's forgotten ruins and dark secrets.
- S4E11
Vesuvius's Secret Victim
Aug 30, 202045mWhen Pompeii was destroyed by an apocalyptic volcano, another town was destroyed, too - Herculaneum. It is one of history's most perfectly preserved towns.
- S4E12
Rome's Great Wall
Oct 18, 202045mThe Roman Empire built Hadrian's Wall to guard its frontiers; new discoveries reveal who the Romans were trying to keep out with this 72-mile-long megastructure.
- S4E13
Hitler's Lost Bunker
Sep 6, 202045mThe underground bunker of Adolf Hitler is home to some of the greatest secrets of the Nazi regime. Experts use cutting-edge technology to uncover new evidence.
- S4E14
Leaning Tower of Pisa: The New Mystery
Nov 8, 202045mThe Leaning Tower of Pisa is one of the world's most iconic buildings, but why does it lean? Investigators uncover the reasons for its tilt.
- S4E15
Ghosts of the Wild West
Nov 22, 202045mThe infamous gunfight at the O.K. Corral only lasted 30 seconds. Now, experts use cutting-edge technology to uncover the mystery surrounding the event.
- S4E16
Tower Of Babel: The New Evidence
Jan 24, 202145mThe Tower of Babel is one of the most famous stories of the Bible. Archaeologists use new technology to uncover how engineers could have built it.
- S4E17
Lost City of Troy
Jan 24, 202145mTroy is the legendary lost city at the centre of the Trojan War, but its existence was never confirmed. New cutting-edge technology explores the ancient myth.
- S4E18
Mount Rushmore: The Hidden Secrets
Jan 24, 202145mMount Rushmore is one of North America's most iconic landmarks. Experts use cutting-edge technology to reveal what lies beneath the rock.
- S4E19
Curse of the Hindenburg
Sep 20, 202045mWhat caused the Nazi aircraft to explode into a giant ball of fire over New Jersey in 1937? Experts use cutting-edge technology to investigate the event.
- S4E20
Bermuda Triangle Apocalypse
Oct 4, 202045mCutting-edge technology is helping experts investigate the Bermuda triangle. Using new techniques, they search for evidence of aliens on the ocean floor.
- S4E21
Lost Kingdom of Kush
Sep 27, 202045mPyramids in the deserts of Sudan are the ruins of a powerful lost civilisation that rivalled Egypt. However, why are the pyramids there and who built them?
- S4E22
Hunt for the First Pyramid
Nov 29, 202045mSaqqara is the site of the first pyramid - the Step Pyramid of Djoser. Experts use cutting-edge technology to explore why the Egyptians built pyramids.
- S4E23
Lost City of Babylon
Nov 1, 202045mArchaeological investigations unearth the secrets of the long-lost city. New evidence reveals what Babylon looked like and what caused its downfall.
- S4E24
Hidden Secrets of the Twin Towers
Sep 13, 202045mThe World Trade Centre's iconic twin towers were an engineering marvel.
- S4E25
Secrets of the Black Pyramid
Oct 25, 202045mWith special access to a hi-tech archaeological investigation, experts reveal why Egypt's Black Pyramid collapsed before its pharaoh was buried there.
- S4E26
Egypt’s Sunken Treasures
Jan 24, 202145mA cutting-edge archaeological investigation uses hi-tech methods to scan the ocean floor in search of sunken sphinxes, temples, and shipwrecks.
- S4E27
Lost World of Atlantis
Nov 15, 202045mNew discoveries on a strange Mediterranean island might offer new clues in the hunt for Atlantis. Experts reveal the apocalyptic event that destroyed it.
- S4E28
Jericho's Buried Secrets
Dec 13, 202045mNew discoveries at the lost city of Jericho offer fresh evidence about the biblical battle that brought its impregnable walls down.