***SPOILERS FOR STRANGER THINGS***
I am thinking about writing about a character who has been stuck in the Upside Down since the Hawkins Lab opened it in 1983. I don't quite know what the backstory would be to why they were then trapped in this parallel but I'm working on it. If you guys want to see some just let me know.
(For those who don't watch stranger things the Upside down is an alternate dimension existing in parallel to the human world. It contains the same locations and infrastructure as the human world, but it is much darker, colder and obscured by an omnipresent fog. The Upside Down is devoid of human life, instead being overgrown with ropy, root-like tendrils and biological membranes covering practically every surface. At least one recognizable animal, a humanoid predator, was native to this dimension, while ash-like spores floated in the air.)