Subligna is about halfway between Rome and LaFayette if you go the back way, i.e., not through Summerville. You cut off Highway 27 before you start up the ridge on the way to Sloppy Floyd Park. It's not much more than a crossroads, these days. I think it was formerly a substantial farming/rural community, simply because it was so far away from anything else--that was before my time. I lived about 3 miles north (just inside Walker county) on West Armuchee road (it's pronounced by the locals as ArmuRchee), but that was late 80's/early 90's.
If you have a topo map of the region, that particular valley is almost completely surrounded by ridges, with a couple of creek outlets. When I lived out that way, there had been talk of building some type of reservoir in that valley because it could be so easily dammed. I think they had a pumped-storage type facility in mind--I've since wondered if that was the same project that became Rocky Mount? I'm not certain. Anyway, Subligna is sort of at the mouth of one of those outlets to West Armuchee valley. If you triangulate among Rome, Lafayette, and Dalton, you should be in the right area.
AWS