The remains included large unifacially worked pebble cores aka sumatraliths, grinding stones, and retouched/utilized flakes. Cultural level two consisted of new types of artifacts including flaked and polished quadrangular adzes and small ground/polished slate knives.
The findings included large, uniformly shaped pebbles (sumatraliths), grinding tools, and chipped pieces that had been modified or used. Level two of the cultural material consisted of new types of tools like flaked and polished quadrangular adzes and small ground/polished slate knives.