Krasae cave (Kanchanaburi province), is a small cave that was used to accommodate British and Australian prisoners of war during World War II. The interior portion has both dark and well lit areas, while the exterior features a cliff that runs alongside a river; both of these areas make this location suitable for ‘hideout’ scenes or scenes that feature an army encampment.

The distance from Bangkok is approximately 200 kilometers, and the travel time is roughly 3 hours by car. 

 Hellfire Pass (Chong Khao Khat) is a large pass with remnants of a railway construction that can still be seen. The pass, which is paved with stone and gravel, runs through the mountainous terrain and is set among thick lines of trees on both sides. This place is suitable for war film scenes such as the marching of armed forces, confrontations, or chases.

The distance from Bangkok is approximately 230 kilometers, and the travel time is roughly 3 hours 40 minutes by car. 

Phu Soi Dao national park, Phitsanulok, is a complex mountain range which serves as a natural border between Thailand and Laos. The park has many beautiful waterfalls such as Phu Soi Dao waterfall and Sai-Thip waterfall, which are perfect for combat scenes and could also feature shots with waterfall jumps.

The distance from Bangkok is approximately 578 kilometers, and the travel time is roughly 8 hours by car. 

Khao Yai National Park (Nakhon Ratchasima province) is a natural heritage site which is a part of the Dong Phayayen-Khao Yai Forest Complex. It’s largely made up of lush forest which is suited for chasing and hiding scenes.

The distance from Bangkok is approximately 192 kilometers, and the travel time is roughly 3 hours by car.