Otherside
Not upside down but sideways, Otherside reflects humanity back at itself. There are ways in if you know how to listen. For the clink of chain. The spike of heel. The sound of steel meeting steel.
Elves ride steam powered railroads to places that are dead. Poison seeps into every corner, leaking from Earth.
Only small things grow. Thin spikes of red thorn peek through walls and up through floors.