The Truth About the ‘Stranger Things’ Upside Down Was in Place Back in Season 1

However, viewers were kept in the dark until season five's second batch of episodes, now streaming on Netflix.
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Stranger Things just revealed the true origins of the Upside Down (and it’s not what anyone guessed)

The final season of Stranger Things just threw away everything we thought we knew about the Upside Down with an unexpected ...
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Here’s Stranger Things viewers’ most convincing theory on what the Upside Down really is

After five seasons, nine years and about 1,000 renditions of Running Up That Hill, Stranger Things is nearly at an end.

Goodbye to the biggest mystery of Stranger Things 5: What is the Upside Down? “Everything we assumed of the Upside Down has been dead wrong”

The Upside Down mystery is explained in ‘Stranger Things 5’ before the final episode. Is it a bridge? Is it an abyss? Is it underground or above the sky?

‘Stranger Things 5’ Volume 2 Spoiler Interview: Duffer Brothers Explain the Upside Down’s Origins, Will’s [SPOILER], That Breakup and Why Eleven Might Not Get a Ha…

This story contains spoilers from Season 5, Volume 2 of “Stranger Things, now streaming on Netflix. After four-and-a-half ...