The Atlantic Test Site is the twentieth video on the DarkHarvest00 channel.
Chris, Alex and Jesse drive to the Atlantic Test Site, which is mentioned numerous times in the Collective Knowledge in hopes to further their investigation. After stopping for fast food, they arrive at the test site and explore the premises shortly before the camera suddenly cuts out from visual and audio distortion. At nighttime, the trio agree to search the nearby woods. They soon encounter Kind von der Ritter, who starts chasing them. The trio run back to their car and escape the premises unharmed. On their way home, Alex suggests to no longer follow the Collective Knowledge's clues, since it nearly got them killed. Chris replies that they overreacted upon finding Kind von der Ritter, but Alex and Jesse angrily rebuff him. As the trio return to Alex's house in the middle of the night, they experience something bizarre. The light coming through the windows changes from nighttime to daylight in an instant, and Alex's mother says "Did you forget something?", implying that they were only gone for a short period of time.
- Jesse's favorite meal at Burger King is a "Number Medium".
- Chris, Alex, and Jesse read a bumper sticker that says "Nuke their ass, take their gas."