Hell

"I know where you are being dragged to, I escaped that before. I've never coming back."

- The Spirit of Vengeance to Robbie Reyes

Hell is an obscure dimension that lies beyond the Earth Plane. It appears as a realm of never-ending darkness, deprived of any form of light and warmth, that tries to absorb any living being who get to near this state of existence.

Escape of a Demon
A powerful entity was able to escape from Hell to the Earth Plane. In order to survive, he bonded himself with humans who had a strong desire of vengeance, transforming them into the Ghost Rider.

Trapped Between Two Worlds
To be added

Trivia

 * In the comics, Hell is common term to reference different underworld realm ruled by demonic entities. The realm of Mephisto, the Dark Dimension and Hel have all been associated with the concept of Hell.
 * In the Agents of S.H.I.E.L.D. episode Repairs, Jemma Simmons discovered that the technician Tobias Ford, after an accident with a portal, was trapped between the Earth and another world, that he called "Hell".