Alaskan Thunder Fuck (also referred to as ATF) is a legendary sativa-dominant strain originating in the Matanuska Valley area of Alaska. According to the legend, it was originally a Northern California sativa crossed with a Russian ruderalis, but sometime in the late 70s it was crossed with Afghani genetics to make it heartier. strong odors of pine, lemon, menthol, and skunk. Known for possessing a relaxing yet intensely euphoric high.