Swathed in forest and tumbling over the pretty Phu Phan mountains, Phu Phan National Park remains relatively undeveloped and isolated. It’s no surprise that the area once provided cover for the renowned Seri Thai resistance fighters in WWII and People’s Liberation Army of Thailand (PLAT) guerrillas in the 1970s. The former used Tham Seri Thai as an arsenal and mess hall during WWII. As well as being a stomping ground for barking deer, monitor lizards, slow loris and monkeys, the 664-sq-km park also hosts a few elephants.
Accommodation options include a campsite and five four-person bungalows.