In one point of the barbarian training you must set a boat on fire, blah blah blah. Anyway, it says I must collect something called "chewed bones." When I looked at the knowledge base, all I found was "they can be found in the ancient cavern." Are they saying monsters drop the bones? Which type of monsters? What is the rarity of the drop?

 

 

 

Just making sure you actually get it from killing monsters, I don't want to waste my time on them for nothing.

They're from mithril dragons. No idea how rare they are.