How would people describe Hell if they’d never been told anything about it by someone else?
Sure. How would people describe Hogwarts/Middel-Erde/Westeros/Tatooine/whatever if they’d never been told anything about it by someone else?
Well, yes, that’s clear to someone who sees religion as fiction. But presumably there could be another channel for gaining insight if you didn’t see it that way. But in both cases, peoples’ thoughts about what’s possible can be constrained by what they’ve already been exposed to, so it’s no surprise people have similar ideas about Hell, and it doesn’t mean much one way or the other.