Green’s Dictionary of Slang

(US black) anywhere considered as far away, unpleasant and culturally alien.

1935		Z.N. Hurston Mules and Men (1995) 144: You’d pass slap thru hell proper. Jus’ a bouncin’ and a jumpin’ and go clear to Ginny Gall, and dat’s four miles south of West Hell.
1942		Z.N. Hurston ‘Story in Harlem Sl.’ in Novels and Stories (1995) 1005: Aw, man, you ain’t willing to go very far. Me, I’d go slap to Ginny-Gall, where they eat cow-rump, skin and all.
2000		M. Swanwick Tales of Old Earth 62: The conductor before him took to visiting the juke joints and gambling dens of Ginny Gall.
2004		Alexander et al. Cultural Trauma and Collective Identity 96: Hell: Ginny Gall way off in Ginny Gall! where you have to eat cow cunt, skin and all.