Kur, Kigal, Nergal
The ancient Mesopotamian underworld , most often known in Sumerian as Kur , Irkalla , Kukku , Arali , or Kigal and in Akkadian as Erṣetu , although it had many names in both langua Kur = Core, same as "Kore" in Greek mythology Kigal = Contain Nergal = Negative Anu = Inner