Where were the possible artefacts of the oldest known Wallacean hominids recently found?

Scientists recently discovered possible artefacts of the oldest known Wallacean hominids on Sulawesi island, Indonesia. Earlier, Homo erectus in Wallacea were believed to have settled only on Flores and Luzon islands about 1.02 million years ago. They were thought incapable of long-distance sea travel, making the Sulawesi discovery important for migration theories. Archaeologists from Australia and Indonesia found small, chipped tools in Soppeng, South Sulawesi, used for cutting small animals and carving rocks. Wallacea is a region in Eastern Indonesia, including Sulawesi, Lombok, Flores, Timor, and Sumbawa.