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Baldur’s Gate 3plunges players into an intricate open world teeming with important collectibles, and among them, Infernal Iron stands out as one of the most elusive. Originally used in the Nine Hells for the creation of formidable weaponry and machinery, this substance has found an intriguing place in the storyline of the game.
Used primarily to win favor with Karlach—the game’s scrappy Tiefling barbarian companion, Infernal Iron is vital to progressing her personal quest and narrative. Its rarity, however, makes it a challenging find. This in-depth guide will outline precisely where to find this invaluable metal across the Sword Coast.
Updated Jul 29, 2025 by Annie Shi:New locations have been added for the Gauntlet of Shar, Yurgir, Mason’s Guild, and Baldur’s Gate itself.
How To Use Infernal Iron
The following section contains spoilers for the story of Baldur’s Gate 3.
Infernal Iron plays a crucial role inprogressing through Karlach’s storyline, the Tiefling barbarian companion of the game.
Early on in your acquaintanceship with her, you’ll learn that Karlach’s heart has been replaced with an infernal engine—a machinery powered by souls (and by extension, Soul Coins)—by her fiendish former “employers”. However, having escaped from the Hells, she nowlacks an infernal mechanicto maintain her engine.
Luckily, you might have already met Dammon,the Tiefling blacksmithin theDruid Grove, who obtained experience withinfernal forgingwhen Elturel was dragged into the Hells.
After learning about Karlach’s infernal engine, you canapproach Dammon for assistance. He’ll be more than willing toservice Karlach’s machinery, but only if yousupply him with enough Infernal Ironto work with.
Progressing with Karlach’s storylinehinges on Dammon’s availability. If Dammon meets his end during Act 1, you’ll need to put a temporary hold on completing Karlach’s questline.
If he survives, however, you’ll find Dammon at the Last Light Inn during Act 2.
Infernal Iron Location 1: The Blighted Village
One of the first pieces of Infernal Iron you’ll be able to find is located in—or rather, under—the Blighted Village(X:66, Y:407) just west of the Druid Grove.
Whether you trick or kill the goblins in the village, once you’re free to explore, head up to one of thenorthern houses(X:44, Y:416), where you’ll see a set ofShabby Wooden Doors. They’re locked but can be picked with asimple DC10 Sleight of Hand skill checkto get into the cellar.
If you don’t have the thieves' tools to spare, you can alsohead inside the house. You’ll find a giant hole in the floor covered in calcified webs.Break the websandjump throughto get into the cellar, albeit at the cost of a little health.
Once inside, locate a ladder leading up to a small platform, and climb it to find alocked chest. Inside, you’ll finda piece of Infernal Iron, and a +1 Shortsword to boot.
Infernal Iron Location 2: The Shattered Sanctum
The next piece of Infernal Iron is simple to find but alittlemore difficult to get to. This one can be locateddeep inside the Shattered Sanctum, where the goblins have set up their camp—specifically, within theTreasure Crates locked away in the hall where Dror Ragzlinis performing his ritual.
You’ll be able tonick the key off of Dror Ragzlin’s bodyif you choose to kill him and side with the Druids at the end of Act 1. Alternatively, if you manage to sneak past the clamoring goblins trying to resurrect a dead mindflayer, you could alsolockpick the Iron Gate. Be warned, however, that it’ll take a staggeringDC 20 Sleight of Hand checkto successfully do so.
With itsMedium Toughnesstrait, the Iron Gate will be difficult to brute-force through, as it can only be damaged byattacks that deal at least 22 damage to it.
Note, however, that it is especiallyvulnerable to Bludgeoning and Acid damage, meaning that a well-timed Chromatic Orb (or Barbarian with a greatclub) could possibly break it down.
Once inside, you’ll be able to easilygrab the Infernal Iron, as well as a ton of other delicious loot and gold.
Infernal Iron Location 3: The Zhentarim Hideout
There are numerous ways to access the elusiveZhentarim Hideout(X: 259, Y: -293)located to thewest of Waukeen’s Rest (X:-82, Y:599).
The most foolproof method to find this place is torescue the Zhentarim traderstrapped in a cave by gnolls on theRisen Road, after which they’lltell you the passcodeyou need to get in through the entrance near the stables ofWaukeen’s Rest.
Alternatively, you can try todeceive the guard Salazonormake your way up from the Underdark.
Regardless of which one you take, make sure not to miss out onthe piece of Infernal Ironhidden in the Black Network’s stores. Deal with the Zhentarim milling around the cave, taking note of the verticality of the map, as well as the oil and water around the map.
After that, climb up to the top of the cave, and make your way north through theZhentarim Basement.Note that the rocky paths are lined with proximity mines, so ensure to set them off from a distance or disarm them.
If your visit has turned violent, take down the next group ofguards and wolvesto find their storeroom at(X:282, Y:-169) behind the iron gate to the left.Similar to the gate in theShattered Sanctum, you canobtain the keyfrom the bodies of the Zhentarim Agents you’ve just murdered orblast through it with some Acid damage—as long as it does enough to pass thethreshold of Medium Toughness.
You’ll find your piece ofInfernal Iron in the chest to the right.
Both of the chests aretrapped to explode if not disarmed.
TheInfernal Iron—which cannot be melted except by the fires of the Hells—will survive the explosion, but little else might, yourself included.
Make sure to bring someTrap Disarm Kitswith you!
Infernal Iron Location 4: Grymforge
This Infernal Iron is a little further along in the story than the others: inGrymforge (X:-647, Y:383), deep within theUnderdark. To get to Grymforge, you’ll want to find theDecrepit Villageright by theUnderdark Beach (X:19, Y:208) waypoint.
Clear out the invading duergar—either violently or by promising to help them find their boots—and make your way over to theduergar boats on the water (X:-2, Y:-214).Interact with them to start your voyage towardsGrymforge.
On your first trip, you’ll encountersome hostile duergaras you sail. If it comes down to a fight,watch the ledges!Falling into the waterof the Ebonlake will befatal—for both you and your foes.
Once you land, you’ll want totalk down the unfriendly duergar guardsby paying their bribe—or scaring them straight. Thenhead up the stairs by the Underdark-Grymforge waypoint to talk to Stonemaker Kith, a duergar enamored by the architecture of the area.
Stonemaker Kith isalso a trader, making him easy to locateon the minimap.
Impress him with a series ofInvestigation, History and Perception checks(each with aDC of 10), and he’ll gladly hand overa piece of Infernal Ironfor your efforts.
Infernal Iron Location 5: Gauntlet of Shar
Even as you delve into the gloomy shadowlands of Act Two, Infernal Iron remains plentiful—as long as you know where to look.
One hellish ingot can be foundin the Gauntlet of Shar,near Balthazar’s Laboratory.
Head westafter descending into the Gauntlet of Shar andsolving the shadow puzzle at the start of the dungeon. After clearing out the angry justiciars and umbral tremors, you’llfind a vaultto thewest of the room, counter-clockwise from Balthazar’s Laboratory.
You’ll need to pass a whoppingDC 30 Sleight of Hand (Dexterity)check to actually unlock this vault, however, so make sure to bring along your party rogue—or alotof lockpicks.
Infernal Iron Location 6: Yurgir
The next piece of Infernal Iron can be foundon Yurgir the Orthon, who similarly be found in the Gauntlet of Shar.
Head eastafter descending into the Gauntlet of Shar, andfollow the displacer beastinto the east wing (X:-656, Y:-761) of the dungeon to start an encounter with Yurgir.
There arenumerous waysto deal with Yurgir, some of which involve no fighting at all. You’ll need to kill him one way or another, however, to get this piece of iron.
After he dies (whether at your hand or his own), you’ll be able to loot the piece of metal from his pile of ashes.
Infernal Iron Location 7: Mason’s Guild
The next piece of metal can be foundin the town of Reithwin, near the Mason’s Guild.
Travel to theeast side of the Mason’s Guildto find the Infernal Metal at (X:-103, Y:20) on a table.
The Mason’s Guild is the location ofa large questlinethat spans through the shadowlands. OurInvestigate The Selunite ResistanceQuest Walkthroughexplains exactly how to find and complete this quest.
Infernal Iron Location 8: Steel Watchers
By Act Three, you’ve probably gotten the use you need out of the Infernal Metals.
However, just in case you need more, you’ll be able to find them aplenty within the city of Baldur’s Gate:every Steel Watcher robotguarding the city can be looted for some upon death.
Killing them is easier said than done, however, because doing so will alert the Flaming Fist and possibly get youarrested and thrown in jail. Plus, the Steel Watch robots themselves are tough opponentsthat self-destruct when killed or at low health.
Finishing theDisable the Steel Watchquestline will make all the Steel Watchers drop dead, after which you’re able to loot them to your heart’s content.
