A mysterious flame appears in the Norwegian wilderness with the fury of the Viking god Thor video footage shows a ghostly figure stalking people in Japan, providing evidence for the truth of a local legend.
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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.
Decoding ancient Mayan texts, a physicist predicts a huge cataclysm will destroy the world in 2012 and believes the culprit is a deadly super-volcano lurking beneath Yellowstone National Park.
Strange events suggest that aliens are among us: A farmer discovers a cow mysteriously mutilated by unknown forces a Texas man is abducted from his bed and, like thousands of people worldwide, claims he is the subject of extraterrestrial experiment.
Was a UFO shot down by the RAF above South Wales on the 26th of February 2016? Craig and Sarah Cruddas examine the evidence as they try to discover if it really was an extra-terrestrial event. This programme contains some flashing images.
In 1928, a workman digging in the ancient Babylonian city of Ur discovers the decayed remnants of a wooden box that has captivated archaeologists for nearly a century. It's trapezoidal in shape, nineteen inches long, eight and a half inches high.
In 1953, a team of archaeologists digging in the ruins of the ancient city of Jericho unearth a strange object that looks like a misshapen head. It becomes known as the Jericho Head. It is nearly 10,000 years old and appears to be made of clay.
Experts investigate the mystery of the Solway Firth Spaceman - a spacesuit-clad figure who strangely appeared in a photograph taken in Cumbria.
Experts unseal the truth about the potential aliens living and working among us. Who has come in peace? And who has a more sinister motive in mind?
A mysterious flame appears in the Norwegian wilderness with the fury of the Viking god Thor video footage shows a ghostly figure stalking people in Japan, providing evidence for the truth of a local legend.
The ghosts of prisoners past make Sandra Boyd's jailhouse ghost tours a little too scary. A woman is attacked by a spirit in her historic home.
A family are terrorised by a supernatural beast, and a woman discovers her adopted dog isn't the only thing she's brought back from the pound.
When a massive spider's web takes over a park, experts investigate if this monster's trap could capture a human. A tree spurts out thick red blood, and some believe it could be an undiscovered species of carnivorous plant.
A mysterious flame appears in the Norwegian wilderness with the fury of the Viking god Thor video footage shows a ghostly figure stalking people in Japan, providing evidence for the truth of a local legend.
The ghosts of prisoners past make Sandra Boyd's jailhouse ghost tours a little too scary. A woman is attacked by a spirit in her historic home.
A family are terrorised by a supernatural beast, and a woman discovers her adopted dog isn't the only thing she's brought back from the pound.
Triangle shaped hovering objects were seen by thousands of people and investigated by scientists and government officials, yet they could never be explained. The sightings occurred in a more than two year "wave" over Belgium, beginning in late 1989.
Lt Ryan Graves and pilots in his squadron detected and engaged with UFOs on multiple occasions. He gave a detailed description of regular encounters that flight teams had with a black box UFO they were seeing "every day."
Triangle shaped hovering objects were seen by thousands of people and investigated by scientists and government officials, yet they could never be explained. The sightings occurred in a more than two year "wave" over Belgium, beginning in late 1989.
On 16 September 1994, sixty two pupils at the Ariel School in rural Zimbabwe said that they saw a silver craft descent from the sky and land on a field near their school. The children claimed that the beings telepathically communicated with them.
In 1980, a UFO detected on military radar, landed near crucial NATO bases. A group of military personnel claim to have seen a shiny metallic object with coloured lights and hieroglyphic inscriptions.
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