东山
The Dong Son culture in Vietnam is known by archaeologists due to a great concentration of boat-shaped coffins. 171 boat-shaped coffins were recovered from 44 sites in Vietnam, and most of these were found from Dong Son sites. Some of these burials included carefully arranged grave goods inside the coffin along with the corpse of the dead. Also, the coffins were found strategically close to water, either rivers or small streams of sea.