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1-11 of 11
- The ancient Anasazi built Chaco Canyon National Historical Park, but now the area is stalked by shape-shifting creatures and visited by time travelers who left behind a mysterious artifact.
- An ancient battle between Native American gods may be behind a series of strange deaths and mysterious lights in Crater Lake National Park.
- Ghost and UFO sightings, mysterious disappearances and a prehistoric pterodactyl at Yosemite National Park suggests a rift in the fabric of time.
- 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.
- Bizarre incidents in Big Bend National Park point to alien activity.
- Strange events point to a malevolent force in Death Valley National Park.
- Strange events point to the existence of intra-dimensional portals.
- Odd events in Apache-Sitgreaves National Forests point to an alien base.
- A powerful secret society could be behind strange incidents in the Smokies.
- Demonic figures in Mark Twain National Forest point to dark forces at work.