Imagine if you will a landscape of cold stone, darkness, and raining ash. Doors at random through the corridors locked and containing souls living out the worst moment of their life in loop. Over and over. While Sabrina's hell contains souls that were signed away in contract, there is no such thing here. Certainly there are some so evil that redemption will never happen and they continue to be tortured by demons or...well, myself. Others are there because they hold on to guilt of a time or place so hard that they send themselves there. The only hope for release is being able to break the loop cycle.
Think of it as therapy with a taint of brimstone.
Graveyards, absolutely not. Those are too old and one particular hell escapee found out the hard way how badly those work in the days of the Black Plague. Morgues...yes. Funeral homes. The recent dead are usually the vehicle of choice.