Crushed Beast Bones can be obtained by killing beasts, animals, and werecreatures, as mentioned in the tooltip. However, locating these specific enemy types can be challenging. Fortunately, there are two dungeon bosses that guarantee drops of Crushed Beast Bones upon their defeat.
Gaspar Stilbain and Blind Odwyn are the two bosses you need to target. Gaspar is the easier of the two, although he is still a level 35 opponent, making him a challenging quarry for weaker characters.
To find Gaspar Stillbain, head to the Whispering Pines dungeon located in Scosglen. The Whispering Pines can be found in the Eastern corner of the Highland Wilds. Once you arrive, travel North-West until you reach an area called The Scar. Stick to the Northern wall, and you will encounter Gaspar in no time.
