Ancient Bone stands as one of Palworld's scarcest crafting materials, locked to a single remote location that presents significant access barriers. Players must travel to No. 3 Wildlife Sanctuary, an isolated island protected by a forcefield off the northeast coast of the Desiccated Dunes, where the resource can be extracted by mining skeletal remains scattered throughout the area.

Reaching the sanctuary requires ownership of either a flying mount or water-based transport, as the game offers no Fast Travel waypoint to ease repeated visits. The exclusivity extends further: skeletal remains found anywhere else on the Palpagos island chain do not drop Ancient Bone, cementing this single location as the mandatory farming destination for players seeking the material.