The unearthed objects include mainly include stone tools, numbering over 1,000.
Through the findings, archaeologists believe that Ben Mau A is one of the fewopen-air stone sites in North Vietnam that are valuable for research on characteristicsof the stone technology and culture.
During their excavations in 2000, scientists also discovered raw pottery in thepre-Dong Son period and the Le Dynasty, and stone axes belonging to the post-Neolithic - early Metal Age.
These show that BenMau A is not only a residential area of prehistoric people through manyperiods, but also a site witnessing a transition from the Son Vi to theHoa Binh civilisation, which is very important for researching the relationshipbetween the two in the Red River basin.
If the hypothesisthat this is the area of prehistoric people can be proven, this will be veryimportant information, marking a big change in the production organisation anddivision of labour of prehistoric people, according to Dr. Ben Marwick from theUniversity of Washington in the US.
Findingsfrom excavations in 2015 show Ben Mau A isan outdoor prehistoric site belonging to the Hoa Binh civilisation which existed atthe latePleistocene to early Holocene inNorthern Vietnam.
This site has astable and undisturbed stratigraphy which can serve the long-term research purpose in thefuture./.