ion said the shadowlands were around before the titans themselves, my crazy theory is, if you played god of war you go into tartarus which is basically how blizzard describes the maw.
https://www.greekmythology.com/Other.../tartarus.html "s a place, it was far below than where Hades resided and it was used as the most horrible prison. Some accounts say that the distance between Tartarus and Hades was the same as between the earth and the heaven. Although the kingdom of Hades was the place of the dead, Tartarus was where ferocious monsters and horrible criminals were banished, or where the gods imprisoned their rivals after a war. The three judges of the Underworld, Rhadamanthus, Aeacus and Minos, decided who would go to the realm of Hades and who would be banished to Tartarus. "n Greek mythology, Tartarus was both a primordial deity that existed before the Olympians, as well as a name to describe a region of the Underworld. As a god, he was third in rank after Chaos and Gaea, preceding Eros."
What if there is gods that pre date the pantheon like how the titans in greek mythology are dethroned by the olympians and banished to tartarus. Its clear from the shadowlands demo i seen played at blizzcon that its heavily influenced by hades, the residents of bastion which would be elysium, all have greek inspired names, but i obviously theres no 1 to 1 connections just wild speculation