The discovery resulted from a fact-finding trip undertakenby the Institute of Archeology, the Vietnam Archeology Association, and the BacKan Museum.
Combing the entire cave, their team found traces of ancient people almost everywhere. Among the artefacts discovered were stone tools made from riverpebbles.
According to Associate Professor, Dr Trinh Nang Chung, basedon the overall study of the relics as well as the structure and age of thesediment, researchers believe that Tham Un was a residence of many generationsof prehistoric people.
Its early inhabitants belonged to the late Bac Son Culturedating back 5,000 to 6,000 years, while the late inhabitants were from theLate Neolithic - Early Metal Ages dating back about 4,000 years.
This is a very important prehistoric relic cave, Chungstated.
Archaeologists are planning to excavate the site in the nearfuture. /.