Portal to the Underworld
Episode 1 • Oct 23, 2015
Ghosts from a bizarre plane crash and a mysterious underground city point to powerful forces at work inside the Grand Canyon National Park.
North America's outdoor country represents an expanse of virtually unexplored wilderness, making it a hotbed for mysteries and the unexplained. There have been hundreds of true tales reported by people every year. Now through eyewitness accounts and key facts, the hidden stories of these beautiful locales are revealed.
20 episodes total
Status
Returning Series
First Aired
2015
Rating
10.0/10
1 votes • HD
People
Cast information is not available for this show.
Episodes
Episode 1 • Oct 23, 2015
Ghosts from a bizarre plane crash and a mysterious underground city point to powerful forces at work inside the Grand Canyon National Park.
Episode 2 • Oct 29, 2015
A tragic plane crash, shocking murders, and mysterious python infestation suggest a dark, evil power at the heart of Florida's Everglades National Park.
Episode 3 • Oct 29, 2015
Black magic, mysterious deaths, and violent fireballs haunt Hawaii's Volcanoes National Park. Many believe this is the work of Pele, the fire goddess.
Episode 4 • Oct 29, 2015
A Bigfoot-like creature and UFO sightings suggest that California's Joshua Tree National Park may be ground zero for alien genetic experiments.
Episode 5 • Nov 06, 2015
A secret, underground Nazi base may be the reason for UFO sightings in Montana's Glacier National Park. It may also be the final hideout for Adolf Hitler himself.
Episode 6 • Nov 13, 2015
Unexplained disappearances, a mysterious death and a Karuk Indian legend may be linked to a race of superhumans in California's Mount Shasta National Forest.
Episode 1 • Jun 22, 2017
A bizarre series of incidents in Big Bend National Park suggests that extraterrestrials are present in this remote wilderness area, leading experts to conclude that aliens have been secretly mining rare minerals there for years.
Episode 2 • Jun 22, 2017
A series of disturbing deaths and disappearances, plus the unearthing of artifacts from an ancient race of people in Death Valley National Park leads to the discovery of malevolent forces that are believed to inhabit the park's secret underworld.
Episode 3 • Jun 29, 2017
Terrifying encounters with gun-wielding ghosts and strange, savage creatures in Cleveland National Forest leads to the discovery of the area's bloody and tragic history and its link to the existence of portals into other dimensions.
Episode 4 • Jul 06, 2017
An alien abduction and strange encounters with a humanoid monster in Apache-Sitgreaves National Forests point to a longtime extraterrestrial presence in the area. Are aliens using the forests to monitor nearby nuclear weapons facilities?
Episode 5 • Jul 13, 2017
Mysterious lights, mechanical sounds from deep within the Earth and the disappearance of dozens of aircraft over the Great Smoky Mountains National Park could be evidence of a powerful secret society with an underground base in the area.
Episode 6 • Jul 20, 2017
Mark Twain National Forest, haunted by hellhounds and other demonic creatures, may also conceal treasures from a lost civilization, pointing to the area's importance as a locus of dark, mysterious energies.
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