Green’s Dictionary of Slang

(US) the ultimate in far-away, unpleasant places.

1942		Z.N. Hurston ‘Story in Harlem Sl.’ in Novels and Stories (1995) 1008: Beluthahatchie: next station beyond Hell.
1997		A. Duncan ‘Beluthahatchie’ in Asimov’s Halloween (2002) 40: Beluthahatchie, well I’ll be frank with you, john. beluthahatchie ain’t nmuch of a place.
2001		Kansas City Star n.p.: 12 May You’re a blues guitarist and a sinner, but hell is nearly full, so you ride the demon train to the next stop. It’s a place called Beluthahatchie, a sort of annex to Hades, and the devil is driving around the hot, dusty realm in a 1936 Hudson Terraplane.
2001		Palm Beach Post 19 Aug. 🌐 Kennedy calls his world Beluthahatchee, which can be described as an Afro-Florida word rooted in black folklore for a place like Camelot or Shangri-La. It is here; it is nowhere; it is everywhere.
2003		T. Gibbons [play title] Bee-luther-hatchee.