The Burning Monolith: Path of Exile 2's Endgame Challenge

The Burning Monolith, a unique map node in Path of Exile 2's Atlas of Worlds, resembles a Realmgate but presents a significantly greater challenge. Accessing it requires three Crisis Fragments, each obtained by conquering a Citadel—an exceptionally rare and difficult map node.

Unlocking the Arbiter of Ash

The Burning Monolith is the gateway to the endgame pinnacle boss, the Arbiter of Ash. Your first attempt to activate the Monolith's door initiates "The Pinnacle of Flame" quest, comprising three sub-quests: Ezomyte Infiltration (Iron Citadel), Faridun Foray (Copper Citadel), and Vaal Incursion (Stone Citadel). Completing these Citadels yields the three necessary Crisis Fragments. Combine them at the Monolith's altar to unlock the Arbiter of Ash encounter. Prepare a powerful build; the Arbiter of Ash is the game's toughest pinnacle boss, boasting immense health and devastating attacks.

The Citadel Hunt: A Test of Patience

Three Citadels—Iron, Copper, and Stone—await, each guarded by a challenging boss who drops a Crisis Fragment. The primary difficulty lies in their elusive nature.

Citadels are one-time attempts. Their location on the randomly generated Atlas is unpredictable. Community strategies, while not guaranteed, include:

1. Directional Exploration: Choose a direction on the Atlas and systematically explore until you locate a Citadel. Utilizing Towers for map overview is highly recommended.
2. Corruption Tracking: Focus on corrupted nodes at the Atlas's edges. Clear these nodes, unlock nearby Towers, and repeat. This strategy can be combined with directional exploration.
3. Clustered Appearance: Anecdotal evidence suggests Citadels often appear in groups. Finding one may indicate the others are nearby.

Citadel hunting is a late-game endeavor, best undertaken with a fully optimized build.

Alternative Acquisition: Trading

Crisis Fragments, the rewards of Citadel conquests, can be purchased through in-game trading or currency exchanges. However, their rarity often commands a high price. This cost may be justified to bypass the arduous hunt.