Tartarus is the deep abyss used as a dungeon for the most wicked souls and Titans. The realm is a vast, dark void beneath the Underworld, where endless shadows stretch into the abyss. Jagged, rocky terrain rises from the depths, and the air is thick with a sense of dread and foreboding. The ground is rough and uneven, scattered with deep chasms and fiery pits. Occasional flashes of lightning illuminate the oppressive darkness, and the distant echoes of tortured souls reverberate through the void. The atmosphere is heavy and stifling, with a constant, low rumble like the growl of some immense, unseen creature.