History Specials Season 1 Episode 180 The Devil's Graveyards

A scientist searches for answers to his son's mysterious death in the Algerian desert, and discovers a vortex of unexplained activity similar to the Bermuda Triangle. His investigation uncovers eleven other "Vile Vortices" around the world, where some of the planet's most unusual and disturbing events are taking place. Bizarre animal attacks, unexplained weather patterns, and passenger jets disappearing right out of the sky might only be the beginning of a greater, looming threat. Could these vortices have been created by extra-terrestrials? Is the government hiding their existence? And can anything be done to neutralize them? This is the exclusive documentary that follows the expedition as they race to unlock the secrets at all costs.