Black metal is the best conventional metal in the game and it does not come out of the ground. It comes off fulings, which means the only way to get it is to fight for it.
Where it comes from
- Fuling camps in the Plains, from chests and from the fulings themselves.
- Fuling villages, the larger stone-walled settlements, which hold far more but are a serious fight.
- Berserkers, which drop a good amount but hit extremely hard.

How to farm it without dying
- Scout the camp from outside bow range first and count the berserkers.
- Pull small groups to open ground rather than fighting inside the camp.
- Kill shamans first, they buff everyone else.
- Use a bow on berserkers. Meleeing one without full padded armour is asking for it.
- Clear, loot the chests, and leave before it repopulates.
Deathsquitos while you are busy
The most common death here is not the fulings, it is a deathsquito arriving mid-fight while your shield is pointed the other way. Keep your ears open.
What to craft
Black metal makes the strongest non-magical weapons in the game: the black metal sword, atgeir and axe, plus the black metal shield. If you only make one thing first, make the weapon you actually use.
You will also want barley and flax from the same villages for bread and linen.