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The article presents a study that traced the obisidian artifacts found in some excavated sites in Bandung, Indonesia. It says that the Cameca MBX Electron Microprobe with wavelength dispersive spectrometers at the University of Malaya, Kuala Lumpur was used to analyze the obsidian samples from Gua Pawon, Dago, and Bukit Karsamanik. It reveals that the obsidian artifacts from Gua Pawon were created using the two obsidian sources of Gunung Kendan in Nagreg and Kapung Rejeng in Garut.

Abstract: This paper presents the results of a study to determine whether the obsidian artifacts found in Gua Pawon, Dago and Bukit Karsamanik in Bandung came from the well-known sources of Gunung Kendan in Nagreg, Kampung Rejeng in Garut or elsewhere. Obsidian artifacts for this study were obtained from earlier archaeological excavations at Gua Pawon and survey at the sites of Dago and Bukit Karsamanik in Bandung. Samples of obsidian were also collected from the known obsidian sources in Gunung Kendan in Nagreg and Kampung Rejeng in Garut for comparative purposes. Analyses of these samples were done on a scanning electron microscope using the energy dispersive X-ray spectrometer at the University of Science, Malaysia, Penang and the electron microprobe at the University of Malaya, Kuala Lumpur. Multielement analysis was undertaken, and statistical procedures were performed on data obtained from the artifacts and the sources. The results of the study thus far suggested that the obsidian artifacts from Gua Pawon were made using obsidian obtained from bath Gunung Kendan and Kampung Rejeng sources while those from Dago and Bukit Karsamanik have yet to be determined. More samples from all the known obsidian sources are needed to determine the variability within and between all the different sources. Temporally the study also revealed that prehistoric humans at Gua Pawon exploited or used the same obsidian resources over several thousands of years. [Copyright &y& Elsevier]

Much remains unknown about the population history of early modern humans in southeast Asia, where the archaeological record is sparse and the tropical climate is inimical to the preservation of ancient human DNA 1 . So far, only two low-coverage pre-Neolithic human genomes have been sequenced from this region. Both are from mainland Hòabìnhian hunter-gatherer sites: Pha Faen in Laos, dated to 7939-7751 calibrated years before present (yr cal BP; present taken as AD 1950), and Gua Cha in Malaysia (4.4-4.2 kyr cal BP) 1 . Here we report, to our knowledge, the first ancient human genome from Wallacea, the oceanic island zone between the Sunda Shelf (comprising mainland southeast Asia and the continental islands of western Indonesia) and Pleistocene Sahul (Australia-New Guinea). We extracted DNA from the petrous bone of a young female hunter-gatherer buried 7.3-7.2 kyr cal BP at the limestone cave of Leang Panninge 2 in South Sulawesi, Indonesia. Genetic analyses show that this pre-Neolithic forager, who is associated with the 'Toalean' technocomplex 3,4 , shares most genetic drift and morphological similarities with present-day Papuan and Indigenous Australian groups, yet represents a previously unknown divergent human lineage that branched off around the time of the split between these populations approximately 37,000 years ago 5 . We also describe Denisovan and deep Asian-related ancestries in the Leang Panninge genome, and infer their large-scale displacement from the region today., (© 2021. The Author(s).)