My campaign party has decided to take a break from the default campaign dungeon to do a bit of overland exploration. They've heard rumors of an ancient burial ground from a bygone age in the vicinity, and have decided to investigate. Avidiron (or the "Old Barrows" as it is commonly referred to) is the final resting place of the sorcerer oligarchs of an ancient mageocracy. Without delving too deeply into its history it is enough to say that the bodies did not rest long in their barrows; the place has become restless with undead.
At any rate, I have yet to draw an above ground map of the barrows, but here is the main dungeon level