MMOexp: Diablo 4 Crushed Beast Bones can be farmed from AventurineLe's blog

Diablo 4 Rite of PassageDiablo 4 mapDiablo 4 gems and sockets. How to Diablo 4 Gold repair gear in Diablo 4How to exit a Diablo 4 dungeon

In the area shown on the map above, you'll see a side quest marker once the Whittling Sanity quest has been completed, which leads you to a Torn Note that has been trampled into the dirt. While you can find and interact with the note before that point, you won't officially start the Reject the Mother quest until the marker appears, which gives you the following riddle to solve:

How to get Crushed Beast Bones in Diablo 4 | MMOEXP