The 19th congress of the Indo-Pacific Prehistory Association (IPPA) opened in Hanoi on Nov. 29, attracting more than 400 scientists from 35 countries.

At the week-long conference, the first hosted by Vietnam, Vietnamese scientists will make presentations on Sa Huynh culture and Thang Long ancient citadel.

A large number of reports will be presented at the congress, which is held every four years by the 80-year-old organistion.

A topic of interest is how to get the community involve in the protection of archaeological relics, with scientists from China and Thailand to share their experiences in this area./.