The Dongson man with war axe on his shultern as handle of a bronze dagger of 2300 years old.

The earliest amulet in fish form made from a big bird nail, which excavated in Du Sang rock-shelter (Kim Boi, Hoa Binh, Vietnam) in ca. 18.000 years ago

PEG-treating in conservating a dongsonian dugout log coffin of 2300 years old

The first pebble tool with a narrow and curved polished edge. The tool is collected in the rock-shelter Du Sang (Hoa Binh, Vietnam)

Vegetable remains excavated in 2100 years old Dong Xa burial field of the Dong Son culture (Kim Dong, Hung Yen, Vietnam)