The BurningMonolith – Clear towers to reveal the ... update as you complete the tasks associated with them. The Pathof Exile2 quest order is fairly linear, with one notable exception.
The Atlas map and the skill tree take up almost 80% of the endgame playtime in Pathof Exile2. Between those ... start looking for The BurningMonolith near the edges of the starting point.
Citadels in Pathof Exile2 are ... allow you to unlock "The BurningMonolith" for the Arbiter of Ash Pinnacle boss fight. Defeating these bosses also grants 2 skill points per boss, which ...