Finding Infernal Iron in Baldur's Gate 3 is a vital task for players looking to advance Karlach's companion quest, The Hellion's Heart, and secure powerful gear from the blacksmith Dammon. This rare resource is scattered across the game's expansive acts, often hidden inside locked chests or guarded by dangerous enemies. Knowing exactly where to look will save you time and ensure your party remains well-equipped for the challenges ahead.

Early Discoveries in Act One

The earliest piece of Infernal Iron can be found within the Blighted Village inside a ruined house that once belonged to a blacksmith. Players need to enter the building's basement, where they will find a high-ground area containing a locked chest hidden behind a ladder. Opening this specific chest rewards you with your first piece of crafting metal.

Another early opportunity presents itself inside the Shattered Sanctum within the Goblin Camp. Players can locate a piece of iron by exploring the treasure stash situated directly behind the throne of the goblin leader, Dror Ragzlin. This area can be accessed either by defeating the leader or by stealthily picking the locks on the heavy iron gates.

Venturing Underground and Into Act Two

For those exploring the subterranean depths, the Grymforge houses another valuable piece of metal. You can obtain it by speaking with the stonemason NPC named Kith, who requires you to pass a series of history, investigation, or perception checks to evaluate the local architecture. Successfully completing this dialogue prompt rewards you with the necessary material without engaging in combat.

As you progress into the Shadow-Cursed Lands during Act Two, additional pieces become accessible to vigilant explorers. One highly notable location is the Last Light Inn, where Dammon sets up a temporary smithy in the stable area. Checking the surrounding storage areas or helping the local tieflings often reveals the materials required for his unique services.

The Final Pieces in the Shadow-Cursed Lands

Deep within the Gauntlet of Shar, players can uncover more metal while navigating the trials of the Dark Justiciars. One piece is located inside a locked vault in the treasury room near Balthazar's laboratory area. Exploring every corner of this ancient temple ensures you have enough resources to finish the questlines before moving to the city.

Additionally, the Reithwin Tollhouse contains a piece of iron guarded by the formidable Gerringothe Thorm. Defeating this boss or convincing her to leave allows you to safely scavenge the room for rare trade goods. Securing these final pieces lets you complete your objectives before transitioning into the third act of the game.