The S.E.M image to look for prehistoric bacterien from a Dongsonian ramie cloth fabric.
A silk fragment with weaving design excavated from 18th mandarin's tomb (Project : Ancient Textile in Vietnam)
The Dongson man with war axe on his shultern as handle of a bronze dagger of 2300 years old.
12.500 years old chared fruit fragments as food remains excavated in the Hoabinhian cave of Con Mong (Thanh Hoa, Vietnam)
The dongsonian bronze drum excavated in burial field Dong Xa (Kim Dong, Hung Yen, Vietnam) in detail.