anyone know where to go after level 7

It's still in the mausoleum, if I remember correctly (Xelloz was looking for it for his lich one day). I think it required d-i.

Edit: Oakspire should have the area also, near that perm that we thought would drop something but didn't.

its a hidden exit 1 or 2 south of the far nw corner of mausoleum i dont think you need d-i until you get to 9 or 10