Suggested routes / Rugged
Deep Caves, Big Forest
A limestone cave route inside the national park — a ranger guide must be booked in advance
Travel order
08:00
Phu Sang National Park
Meet the ranger guide
178,049 rai of forest along the Thai–Lao border — home to the warm waterfall, limestone caves and study trail…
09:30
Tham Pha Daeng Cave
A limestone chamber 450 metres deep
A limestone cave inside the national park, named after the red cliff at its mouth.
11:30
Tham Nam Lot Cave
The stream running under the mountain
A cave with a stream running right through it, on the nature study trail.
14:30
Phu Sang Waterfall
Rinse off in the warm water to close the trip
Thailand's only warm waterfall, falling into a clear pool that stays 33–35°C all year round.