The survey, which runs from June 15 to 18, covers three priority areas spanning about 2,500 square metres within the park. The locations were identified based on historical records, witness accounts and previous research.
The operation is being carried out by the HCM City High Command in coordination with military engineering units, defence agencies, experts from Vietnam National University-HCM City and historical witnesses.
Before the survey began, military engineers cleared the area of any unexploded ordnance to ensure safety.
Experts are using a combination of ground-penetrating radar and electrical resistivity imaging to detect underground anomalies that could indicate mass burial sites or other disturbed subsurface structures.
Le Van Anh Cuong, head of the Department of Geophysics at the University of Science, said ground-penetrating radar allows researchers to identify underground anomalies by analysing reflected signals from different soil layers.
According to witnesses, some suspected burial sites may also contain ammunition, explosives and wartime artefacts buried alongside the victims.
The K70 Team under Military Region 7 is expected to join the operation later this month after completing its mission in Cambodia.
