If your graveyard is on the second or third tier, you could terraform the holes you want by digging into the cliff, leaving the hole, and filling back in to where you started, if that makes sense? It'll take a bit of planning and effort, but it's an idea.
If your graveyard is on the second or third tier, you could terraform the holes you want by digging into the cliff, leaving the hole, and filling back in to where you started, if that makes sense? It'll take a bit of planning and effort, but it's an idea.