I'm only going to explain this once so here we go:
Hell is devided into parts like a body eg: the head of hell, the heart of hell, the stomach of hell... (you'll see why soon)
Hell is totally pitch black, this is a madness effect
In the head of hell there are pits full of cells where people grow of age so quickly that their skins and muscles begin to peel causing extreme pain
While the stomach of hell, as you might have already guessed, is where you are slowly digested over all eternity...
You end up in different sections for different sins (Those were the only two I knew)