PoE 2 Abyss Guide: Depths, Bosses, Rewards, and Crafting Explained
Abyss is a special encounter that appears in both the campaign and the endgame. You follow a crack in the ground—called a fissure—as it moves across the zone, spawning waves of Abyss monsters. Close enough fissures, and a pit opens, releasing stronger enemies. Clearing the pit rewards you with an Abyssal Trove, or sometimes an entrance to the Abyssal Depths.