terrified vids on Instagram: "The Upside Down in Stranger Things is a dark mirror of the real world — same streets, same buildings, but frozen in decay and covered in organic growth, spores, and creeping vines. It exists as a parallel dimension layered over Hawkins, Indiana, accessible through rifts that open due to experiments conducted at Hawkins National Laboratory. Unlike a simple alternate universe, the Upside Down appears hostile and sentient. The environment is toxic to humans, filled wit