The Burning Monolith in Path of Exile 2 is the ultimate endgame challenge and requires collecting three Crisis Fragments Weathered, Ancient, and Faded to unlock its door. These fragments come from defeating faction leaders in special high-tier Citadels found on the Atlas. Once you have all three, you can use them at the Mysterious Obelisk inside the Burning Monolith, activating the mechanism to summon the Arbiter of Ash, a boss considered the pinnacle of PoE 2’s content.
Crisis Fragments function as keys to sealed encounters that gate the highest difficulty content. Players must first clear adjacent lieutenants before being able to face the faction leader holding the fragment. If you fail at defeating a lieutenant or leader, they escape and must be hunted down again, adding tension and challenge to the farming process.
Once in the Burning Monolith, placing the three fragments in the altar locks the arena and triggers the Arbiter of Ash encounter. This boss fight involves multiple phases with complex patterns players must dodge instant-kill beams, avoid intense area-of-effect attacks, and maneuver through fire and ice hazards. High movement speed and careful positioning are critical for survival. The fight tests build design, reflexes, and strategic planning, especially given that players need to juggle safe zones and react to projectile waves.
The Burning Monolith also ties into the Atlas’ passive tree, where specialized nodes such as Ancient Relics and Modular Servant increase the rarity and quantity of the Arbiter’s drops, which include exclusive currency, unique items, and high-tier crafting materials. As a result, Crisis Fragments and the Burning Monolith chain are essential for endgame progression and character advancement.
Crisis Fragments serve not only as content keys but as markers of progression, challenging players to optimize their maps, gear, and strategies. Whether solo or in groups, mastering their acquisition and effectively using them to conquer the Burning Monolith frames much of the late-game experience in Path of Exile 2.