Mysteries at the National Parks

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.

A series of disturbing deaths and disappearances, plus the unearthing of artifacts from an ancient race of people, leads to the discovery of malevolent forces believed to inhabit Death Valley National Park's secret underworld.

Terrifying encounters with gun-wielding ghosts and strange, savage creatures in California's Cleveland National Forest points to the existence of portals into other realms.

A bizarre alien abduction and other inexplicable encounters in Apache-Sitgreaves National Forests point to a longtime extraterrestrial presence that may be monitoring nearby nuclear weapons facilities.

Mysterious lights, mechanical sounds from underground and the disappearance of dozens of aircrafts over the Great Smoky Mountains National Park could be evidence that a powerful secret society has an underground base in the area.

Hellhounds, demonic figures and a buried treasure in Mark Twain National Forest point to dark, sinister forces deep inside the area.

Chaco Canyon National Historical Park may be a portal between our world and a distant star system, leading to numerous bizarre encounters in the area.

Ghost and UFO sightings, mysterious disappearances and a prehistoric pterodactyl at Yosemite National Park suggests a rift in the fabric of time.

An ancient battle between Native American gods may be behind a series of strange deaths and mysterious lights in Crater Lake National Park.

A demonic truck driver, disembodied voices, nightmarish skinwalkers and a time loop are among the bizarre phenomena found in Canyonlands National Park, where the mineral quartz may be acting as a recorder of human experience.

Mysterious lights and animal mutilations suggest that Great Sand Dunes National Park may be a gateway for an alien civilization.

A malevolent race of reptilian humanoids at Lassen Volcanic National Park may be at the center of a global conspiracy.