Launch status: Graveyard Keeper 2 is out now worldwide (September 22, 2026) on PC, PS5, Xbox Series X|S, Switch & Switch 2 — full details in the release date & platform schedule.
On this page 7 sections
Core Data & Verification Matrix
| Early-Game Location | Witch Swamp Surface Bog Chunks |
| End-Game Infinite Source | Northern Quarry Mountain Wall |
| Fuel Superiority | 1 Coal = 50 Fuel Points vs 1 Firewood = 5 Fuel Points |
| Processing Station | Furnace I, II & III |
| Key Intermediate Parts | Nails, Simple Iron Parts, Complex Iron Parts, Steel Ingots |
| Associated Blacksmith | Krezvold (South Village Edge) |
Official Video Reference
Verified gameplay showcase footage covering key mechanics and features discussed in this guide.
Early Bog Iron vs Northern Quarry Infinite Veins
How to transition from scrounging scattered bog ore to running an industrial quarry extraction operation.
Early-game iron scarcity is one of the most frustrating bottlenecks for new Keepers. The scattered rust-colored boulders in the woods around your house do not respawn once exhausted. New players often exhaust local ore before realizing that the swamp and northern mountains harbor limitless supplies.
The western swamp contains dozens of surface bog iron nodes that require only a basic pickaxe. However, the true industrial turning point occurs when you unblock the northern passage to the quarry, where infinite Iron Slabs can be hauled and split at an Iron Cutter table.
| Iron Source | Yield Per Node | Respawn Mechanics | Travel / Extraction Difficulty |
|---|---|---|---|
| Home Yard Boulders | 2-4 Iron Ore Chunks | Does NOT Respawn | Immediate (Starting yard) |
| Swamp Bog Mounds | 5-8 Iron Ore Chunks | Permanent until cleared | Low (Avoid green slimes) |
| Catacombs Floors 1-5 | 4-6 Iron Ore per node | Respawns on dungeon reset | Medium (Skeleton patrols) |
| Northern Quarry Iron Wall | Infinite Iron Slabs (x10 ore each) | Infinite (Permanent vein) | High (Requires path clearing) |
| Krezvold Blacksmith Shop | Iron Bars & Nails | Restocks weekly | Commercial (Costs copper/silver) |
Transitioning to the Northern Quarry eliminates iron scarcity forever; a single haul of 5 iron slabs yields 50 raw iron ore chunks when cleaved at your yard workstation.
Before you unlock automated transport lines, push multiple slabs along the forest trail simultaneously by aligning them in a straight line as you walk.
The Coal Revolution: 10x Smelting Efficiency
Why burning firewood is a rookie mistake and how coal unlocks non-stop steel smelting.
Chopping trees for firewood to keep your furnaces lit consumes an immense amount of stamina and time. The deep seam inside the Northern Quarry Coal Tunnel yields hundreds of Coal chunks in just a few swings of a pickaxe.
A single piece of Coal provides 50 furnace heat units, compared to a paltry 5 units from standard Firewood. Packing 20 Coal into Furnace II or III allows it to smelt complex steel ingots and glass through multiple in-game days without needing replenishment.
| Fuel Type | Heat Units Per Piece | Inventory Stack Size | Gathering Efficiency Rating |
|---|---|---|---|
| Wood Billets | 2 Heat Units | 25 per stack | Terrible (High chop energy) |
| Standard Firewood | 5 Heat Units | 50 per stack | Poor (Better used for cooking) |
| Lump of Coal | 50 Heat Units | 100 per stack | God Tier (Mined in seconds) |
| Refined White Charcoal | 120 Heat Units | 50 per stack | Specialized (Needed for gold/glass) |
| Peat Sod | 10 Heat Units | 50 per stack | Suboptimal (Better used on crops) |
Mining 100 Coal from the quarry tunnel provides 5,000 heat units—enough to smelt over 250 Iron Bars and 100 Steel Ingots without chopping a single log.
The coal tunnel is pitch black; carry a torch or lantern in your offhand slot to prevent fatigue debuffs while mining in the dark.
Step-by-Step Strategic Walkthrough
- Gather surface Bog Iron chunks in the marshlands south of your graveyard for early nail and tool repairs.
- Unlock Iron Smelting and Advanced Blacksmithing in the Building technology tree.
- Construct a basic Furnace in your workyard to convert raw ore into Iron Bars using Firewood.
- Clear the northern forest barrier to reach the infinite Iron Slab wall and Coal seam at the Northern Quarry.
- Replace all wood fuel with Coal in your furnaces to achieve a 10x burn time efficiency multiplier.
Frequently Asked Questions
Where is the infinite Iron vein in Graveyard Keeper 2?
At the Northern Quarry cliff wall, located in the northwestern mountains past the Witch Swamp.
Where do you find Coal in GK2?
Coal is mined from the dark mine shaft entrance situated in the cliff wall at the Northern Quarry campsite.
Why should I use Coal instead of Firewood for furnaces?
Coal provides 50 fuel points per chunk versus only 5 for firewood, multiplying smelting uptime tenfold.
How do you make Steel Ingots from Iron?
Combine Iron Bars with Coal in Furnace II or III after unlocking the Advanced Metallurgy tech tree perk.
Can you only get Steel from the Blacksmith, or can you craft it?
You can craft Steel yourself! While purchasing Steel from Krezvold the Blacksmith is a quick early shortcut, you are not dependent on vendor stock. Unlock Advanced Metallurgy in the tech tree, construct Furnace II or III in your workyard, and smelt Iron Bars with Coal to produce unlimited Steel Ingots locally.
Related Strategy Guides
Marble & Carved Stone Guide
Workyard & AutomationGold & Silver Nuggets Guide
Combat & DungeonsWeapons Crafting & Damascus Steel
Combat & DungeonsArmor Crafting & Durability Guide
Farming & CookingCrop Farming & Fertilizer Guide
Combat & DungeonsCatacombs Floors 1 to 15 Guide