National Park Secrets and Legends - Season 1 (2014)

El Yunque National Park harbors a powerful creature called the Chupacabra that is linked to UFO sightings in the area, leading to theories of a US government facility conducting secret experiments.

A plane crash in Everglades National Park leads to strange hauntings on other aircraft, and two serial killers are inexplicably drawn to the murky swamps of Everglades.

Visitors to Pennsylvania's Gettysburg National Park report numerous sightings of ghosts, which appear to be soldiers from one of the bloodiest battles in US history. Long before the Civil War researchers discover the area's bloody history from Native American battles. This leads to speculation that there is something about Gettysburg that has created a hotbed for ghostly activity.