Before revision: Evidences Duyong Cave Artefacts The oldest known ornaments made from cone shells were found in the early 1960s in the grave of an adult male in Duyong Cave in Palawan.
After revision: Evidences Duyong Cave Artifacts The oldest known ornaments made from cone shells were found in the early 1960s in the grave of an adult male in Duyong Cave in Palawan.