Halloween may have come and gone, but for activists fighting the Keystone XL pipeline, every day the project is allowed to exist portends a terrifying future for the environment

To convey such frightening prospects, environmental group 350.org recently gathered Amy Smart, Justin Chatwin, Wendie Malick and Ed Begley Jr. to film a horror trailer on the Keystone. Titled "Keystone Horror," the trailer is a spoof on the 1979 "Amityville Horror" film. Instead of a haunted house, however, this one involves a home threatened by a pipeline in the backyard. 

Check it out below. 

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Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Celebs star in Keystone XL pipeline horror trailer spoof
Amy Smart, Justin Chatwin, Wendie Malick and Ed Begley Jr. for the Environmental Media Association.