Drow corpse dumping grounds

  An adventurer returning from the underdark reports of finding something 
  they wish they haden't - the cave in which the drow dump corpses of the 
  many, many MANY things they kill.  And many of those corpses have risen to 
  become many undead. 
 
  For levels 150 to bo...err grind in.
  Mob size is around 30m with something being...bigger.