Please note that some information on this wiki is still based on the demo version.
If you notice any errors, feel free to correct them.
Bonepile
From Super Fantasy Kingdom Official Wiki
Bonepiles are the source for 
Bone in Super Fantasy Kingdom.
Usage
Every run there are 13 × Bonepiles spawning naturally. Bonepiles can be mined by workers assigned to the 
Boneyard. New bonepiles spawn when a Bloat corpse is left overnight.
Since every bonepile can be harvested 5 times you can get a maximum amount of 65 × 
Wood without hunting bloats or spawning more via a Relic
Source
Depletable
