entertainment Things you might not have known about horror classic ‘Tremors’ (17 photos) By: Alex In: Entertainment, Movies, Pop Culture Mar 11, 2020 693 Liked! 47 Disliked 0 1GIF The moving “humps” in the dirt were made using a boat buoy The buoys were tied to chains and pulled by trucks. As they dragged just below the surface of the earth, the dirt bubbled up, creating that signature worm tunneling effect. Like this post? 693 Liked! 0