Boss altar · Swamp
Bonemass’s Altar
1 Find
The altar is in the Swamp. It is shown by vegvisirs in sunken crypts and swamp ruins.
2 Place 
10× Withered Bone
10× Withered Bone 3 Fight 
Bonemass
Bonemass Good to know
- Bonemass appears about 12 seconds after you offer the 10 Withered Bones.
- The altars stand at an altitude of 0–2 m, at least 3000 m apart.
- A runestone at the altar reads: “Cook their remains.”