On 11 December 2019, a team of researchers led by Dr. Maxime Aubert announced the discovery of the oldest hunting scenes in prehistoric art in the world which is more than 44,000 years old from the limestone cave of Leang Bulu’ Sipong 4. Archaeologists determined the age of the depiction of hunting a pig and buffalo thanks to the calcite 'popcorn', different isotope levels of radioactive uranium and thorium. In March 2020, two small stone 'plaquettes' were found by Griffith University archaeologists in the Leang Bulu Bettue cave, dated to a time between 26,000 and 14,000 years ago. While one of the stones contained an anoa (water buffalo) and what may be a flower, star or eye, another depicted an astronomic rays of light. In January 2021, archaeologists announced the discovery of at least 45,500 years old cave art in Leang Tedongnge cave. According to the journal Science Advances, cave painting of warty pig is the earliest evidence of human settlement of the region. An adult male pig, measuring 136 cm x 54 cm and what is likely a Sulawesi or Celebes warty pig (Sus celebensis), was depicted with horn-like facial warts and two hand prints above its hindquarters. According to co-author Adam Brumm, there are two other pigs that are partly preserved and it appears, the wart pig was observing a fight between two of them.