What do you use the Swamp Key for in Valheim?
The Swamp Key unlocks the Sunken Crypts in the Swamp biome. Get ready for some serious treasure hunting and iron gathering!
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Swamp Key = Sunken Crypts! You'll find lots of iron scrap and other goodies in there.
The only thing it's good for is unlocking Sunken Crypts in swamps. Simple as that.
You use the Swamp Key to open Sunken Crypts in the Swamp biome. They contain valuable resources like iron scrap, so don't forget it when you go exploring.
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