Is it farther or further?
disreputable, impoverished New York City neighborhood, the name attested from 1879. The phrase was used from at least 1866 as an intensive form of Hell.
Hell's kitchen (American), a horrible slum. Hell's Kitchen, Murderer's Row, and the Burnt Rag are names of localities which form collectively the worst place in New York. [Albert Barrère and Charles G. Leland, "A Dictionary of Slang, Jargon & Cant," 1889]