plain of jars - phonsavan (laos)

Plain of Jars - Phonsavan (Laos).­

Thousands of ancient stone jars lie scattered throughout a plain near the city of Phonsavan (Laos).­

Archaeologists believe that the jars were used 1,500–2,000 years ago, by an ancient civilization whose culture is now totally unknown.­

Anthropologists and archeologists think that the jars were funeral urns.­

The Plain of Jars is littered with UXO (Unexploded bombs), in particular cluster munitions, the results of massive US bombardment during the Lao Civil War.­

See more information about this place in this Wikipedia article: en.­wikipedia.­org/­wiki/­Plain_­of_­Jars

Has anyone varified the theory of funeral urns by scraping for DNA trace, or mineral trace?
It is a shame how much history that war so often destroys.