Stranger Things season 5 made a huge reveal about the Upside Down and its origin, and looking back, there were a couple of ...

In trying to find out more about the supposed shield generator around the Upside Down, Dustin discovers a notebook from Dr.

However, viewers were kept in the dark until season five's second batch of episodes, now streaming on Netflix.

Eleven accidentally created the Upside Down when she opened the gate in Stranger Things season 1. This happened during her ...

"Stranger Things" Season 5, Volume 2 finally reveals the origins of the Upside Down. Here’s how the wormhole works, what the ...