Ancient Astronaut theorists propose these sites are remnants of a lost extraterrestrial electrical system--one erected to draw energy from the Earth. See more in this clip from Season 1, Episode 8, Energy Lines And Hot Spots. Watch your favorite episodes of Ancient Aliens on The HISTORY ...

A possible black hole is created during a Menlo Park experiment. See more in this scene from Season 1, Episode 8, "Energy Lines and Hot Spots." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...