PHETCHABURI, July 20 –Some 100 Thai army soldiers began a jungle march operation to locate nine Thai soldiers who were on board the Black Hawk assault helicopter which lost contact and crashed while flying to retrieve the bodies of Saturday’s helicopter crash victims in the vast 3,000 sq km Kaengkrachan National Park in western Phetchaburi province on the Myanmar border.

The national park is Thailand’s largest, and most isolated, and receives some of the heaviest rainfall in Thailand.

Read more: MCOT