Boulder Bone is a crafting component in Monster Hunter World. It is used to craft various Weapons, Armor and Upgrades.
Item Description: Boulder Bone is used as crafting material. Can be found in bonepiles in the Wildspire Waste. Its size evokes a certain primal quality.
Location: Boulder Bone is randomly gathered from Bone Piles in Wildspire Waste:
(Map Locations in Red Circles)
You can get it from any of these bone piles. It’s best that you go from bonepile to bonepile and loot all of them until it drops. Then fast travel to another map to make everything respawn and go again.
The way bone collecting works is that each map has a few types of bones. Each bonepile on that map can drop any of its bones. It’s slightly random. So bones are not restricted to one pile, but rather to a certain map.
For all other crafting materials, check out our Monster Hunter World Wiki.