New discoveries suggest that a sea beast like the Kraken could have existed, and experts examine a strange monster that could provide answers into the mystery.
A new excavation at the mysterious home of the Minoans leads to a startling discovery about real-life origins of the Minotaur and bloody human sacrifices.
New discoveries reveal the bloody origin of the feathered snake god, and experts investigate why the ancient Mesoamericans believed in human sacrifice.
The hosts highlight independent inventors who create astonishing inventions in their backyards, including a vacuum-powered railway and a hot air balloon.
The CIA devises a revenge plot after the Soviet Union unveils its own space shuttle; recent discovers shed light on the destruction of Sodom and Gomorrah.
A look is taken at the origin of Earth, and whether or not the landscapes and terrain came from volcanoes under the sea or life came from another source.
Rob searches for tunnels in Denver's airport and capitol building to examine rumors of a secret group; Rob tries to uncover secrets of a serpent-shaped mound.
Rob investigates ancient ruins that suggest Europeans got to the Americas before Columbus; Rob visits a dormant volcano in California that shows signs of life.
Rob investigates major fault lines that are capable of starting a mega-quake; Rob explores a sinkhole that some think leads to the center of the Earth.
Rob goes on a hunt for a grave that could reveal the dark secret of America's industrial past; Robs uses technology to find out why a lake is disappearing.
Rob investigates the rumors of an underground escape passage used by Al Capone; Rob tries to uncover who or what created a vast landscape of earthen mounds.
Rob Nelson examines markings that could suggest a violent battle between prehistoric beasts; Rob investigates California lake that could be home to alien life.
Rob investigates the Underwater Stonehenge at the bottom of Lake Michigan; Rob uses technology to search for rumored escape tunnels in an Alcatraz prison.
Celine and Fabien Cousteau investigate if an infamous sunken ship was deliberately attacked by spies on a top-secret mission or if it was merely an accident.
Experts examine discoveries and clues in the Amazon jungle that have been found through the combination of cutting-edge technology and innovative archaeology.
Archaeologists find hard proof of the prehistoric civilization that once thrived in the Amazon and learn how they built an advanced society in a hostile jungle.
Experts examine discoveries and clues in the Amazon jungle that have been found through the combination of cutting-edge technology and innovative archaeology.
Archaeologists find hard proof of the prehistoric civilization that once thrived in the Amazon and learn how they built an advanced society in a hostile jungle.
Rob Nelson examines markings that could suggest a violent battle between prehistoric beasts; Rob investigates California lake that could be home to alien life.
Rob investigates the Underwater Stonehenge at the bottom of Lake Michigan; Rob uses technology to search for rumored escape tunnels in an Alcatraz prison.
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