Hell-Fire

Pike's vision of Hell-Fire
Hell-Fire was a hellish, mythological location.
During his childhood, Christopher Pike once heard a fable in which Hell-Fire was featured.
During his captivity on Talos IV in 2254, now-Captain Pike was subjected to an illusion of Hell-Fire. This simulation served as a punishment when he refused to cooperate with his Talosian jailers, specifically an instruction from The Keeper to consume a protein complex. (TOS: "The Cage", "The Menagerie, Part II")
No name for this location was ever provided on-screen. The name "Hell-Fire" comes from the scripts for "The Cage". In the first and final drafts, Hell-Fire was described in a stage direction that stated, "[The captain] finds himself writhing in bubbling, sulphurous [sic] brimstone, in a dark place obscured with smoke, flame licking at him from all sides."