The altar is just what it seems: a large slab of alabaster. The two crystal knives and the crystal bowl sit glimmering upon it. The bowl is empty, and the knives appear to be sharp. No doubt they are used for some foul purpose.
The doors are spaced equal distance from where you descended into the room. East, west or south are your options, as the northern door is the one that is chained.
OOC: And once again, sorry sorry sorry for the delays. Life is crazy. I'm gonna try to get the map up tonight.