Recent work in Vietnam’s Ha Giang Province has revealed a number of prehistoric sites, all on the Dong Van Karst Plateau.
More prehistoric vestiges discovered in Dong Van Karst Plateau
Vietnam Net, 09 August 2014
Discovery illuminates ancient VN
Viet Nam News, 09 August 2014
20-millennia-old tools found in karst plateau in Vietnam
Tuoi Tre News, 11 August 2014