The region of the Underwork underneath the Dusk Mountains, the Titanhearth is a sprawling underground complex of ancient magma-fed forge-works. Knowledge of its original purpose is lost, but the hearth is fed from magma pulled up from deeper regions of planet to feed gigantic metalworking facilities. Due to the effects of the Maelstorm the forgeworks continually overflow as the magma system runs out of control, firing the continuous volcanoes of the Dusk Mountains. The Titanhearth is also the ultimate source of the Fire of Baal under Genopolis.