Inner Sanctum will have two entrances, one from the side and one from the back. Both require a concrete pour for the stairs. We've completed the pour for one entrance and are getting ready for the second pour for the other entrance. Two areas of egress are important for fire safety. Each entrance area also has to have its own drainage system in case of severe rain so our new dungeon basement does not get flooded! Drains are connected to a sump pump and buried under gravel.