Withered Bone Valheim 1.0.20
Withered Bone is a natural resource found in the Swamp of Valheim. It is used to craft Nimble Anklet.
“A giant bone, knotted like old wood.”
Withered Bone is a material described in the game as "A giant bone, knotted like old wood." It first becomes available in the Swamp.
Each one weighs 1, and you can carry a stack of up to 30. It can be teleported, so you can take it through a portal with you.
Its listed use is crafting the Nimble Anklet.
Found in the world
It is placed in the world by the world generator: see where to find Withered Bone.
Used to craft
Other material items
Acorns, 
Amber, 
Amber Pearl, 
Ancient Bark, 
Ancient Coin, 
Ancient Metal, 
Ashlands Gourmet Bowl, 
Ashwood, 
Asksvin Bladder, 
Asksvin Hide, 
Asksvin Neck, 
Asksvin Pelvis.