Since reports of a disc crashing in Roswell in 1947, the archetypal UFO – the flying saucer – has captured public imagination. Craig and Sarah explore if flying saucers are evidence of extra-terrestrials. This programme contains some flashing images.
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In Montana's Glacier National Park, some claim that there is a hidden underground Nazi base that may even have been the final hideout for Hitler himself.
Are UFO sightings at Joshua Tree linked to an anti-aging machine and a powerful creature called the Yucca Man?
The Hawaii Volcanoes National Park is the site of strange events. Are they linked to the legendary Native Hawaiian Goddess of the Volcano, Pele?
A plane crash in the Everglades National Park leads to strange hauntings - and some believe the park may exert a dark, transformative power.
A strange series of events in Grand Canyon National Park leads researchers to speculate whether its power comes from forces that cannot be explained.
In a Danish bog, hundreds of mutilated ancient bones are found. A mysterious deserted island belonging to Russia is explored. Massive strange patterns on the ground are discovered in northern Kazakhstan.
A grim discovery in a Swedish lake reveals shocking ancient practices. In the Canadian Arctic, the fossil of a previously unknown mammal is found. Bizarre ice formations in the Antarctic Ocean are investigated.
Many believe Gettysburg National Military Park is haunted by its violent past - here, explore some incredible claims about the park's history.
Few know that one of the US's most mysterious National Parks is in Puerto Rico - a place some believe is home to a creature known as the Chupacabra.
From inexplicable disappearances to mysterious experiments, events in Mount Shasta National Park may be explained by an ancient Karuk Indian legend.
In Montana's Glacier National Park, some claim that there is a hidden underground Nazi base that may even have been the final hideout for Hitler himself.
The Alien Disclosure Files is a series that delves into these current and historical unexplained incidents and brings together leading experts in the fields of ufology and the paranormal to try to uncover the truth.
There are three types of close encounters with aliens, sightings, fleeting interactions, and the third kind where aliens take humans for extended periods. We look at instances of all three and meet real people who have experienced them.
A fire-breathing crater burns in the middle of a desert, and some suspect it is a gateway to hell. Also, a deadly shark is found lurking in a golf course water hazard. A giant white blob threatens a town in California.
An explorer searching for treasure at a Mayan sacrificial site is attacked by a mysterious underwater fog thousands of fish spontaneously jump to their deaths something alien appears over the skies of Los Angeles.
Discover the forces living in the secret underworld of Death Valley National Park, where a series of deaths and disappearances have taken place.
A series of incidents in Big Bend National Park leave experts convinced of secret alien activities taking place there.
Many believe Gettysburg National Military Park is haunted by its violent past - here, explore some incredible claims about the park's history.
Few know that one of the US's most mysterious National Parks is in Puerto Rico - a place some believe is home to a creature known as the Chupacabra.
Chile, Puerto Rico, and Japan are some of the locations in the world that receive more UAP sightings than anywhere else. What are the causes behind these so-called “hotspots”.
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