Illustrative image (File photo) Hanoi, May 25 (VNA) - Over 700 prehistoric artefacts have been discovered inside Tham Un cave in the northern mountainous province of Bac Kan’s Ba Be district. The discovery resulted from a fact-finding trip undertaken by the Institute of Archeology, the Vietnam Archeology Association, and the Bac Kan Museum. Combing the entire cave, their team found traces of ancient people almost everywhere. Among the artefacts discovered were stone tools made from river pebbles. According to Associate Professor, Dr Trinh Nang Chung, based on the overall study of the relics as well as the structure and age of the sediment, researchers believe that Tham Un was a residence of many generations of prehistoric people . Its early inhabitants belonged to the late Bac Son Culture dating back 5,000 to 6,000 years, while the late inhabitants were from the Late Neolithic - Early Metal Ages dating back about 4,000 years. This is a very important … [Read more...] about Prehistoric relics discovered in Bac Kan cave