I may call this room an underdark 'dungeon,' but it can easilly be modified by your furniture choices into a hall, a warehouse, a temple, a large living space - the room has oodles of space ready to be used. Based off of the Dungeon of Doom mesh, I have seen enough stone dungeons built off of this that I decided to put in some nice marble tiles instead so that it can appeal to those who want a large, open space with a medieval feel nonetheless.