Tham Phra Waterfall icially known as Tham Phra Phu Wua, is located within the strict conservation area of the Phu Wua Wildlife Sanctuary in Seka District, Bueng Kan. It is widely regarded as a geological masterpiece of the upper Northeast. The waterfall is situated on a massive sandstone plateau that has been sculpted by water erosion over millennia, resulting in smooth rock surfaces, natural grooves, and various basins scattered across the area. The surrounding landscape consists of lush dry evergreen and mixed deciduous forests, serving as a vital watershed that sustains the biodiversity of the Phu Wua ecosystem.

The physical structure of the waterfall is categorized into three main levels, each offering a distinct experience. The lower level features a broad sandstone floor where the water cascades down into large, shallow pools safe for swimming. The middle level is the primary attraction, famous for its natural water slides. These are smooth, water-worn rock channels that mimic a water park’s slide, allowing visitors to glide down with the current into the pools below. The uppermost level is a site of spiritual significance and tranquility, housing several Buddha statues nestled under a natural sandstone overhang. This area gave the waterfall its name, "Tham Phra" (Monastery Cave), symbolizing the deep-rooted connection between nature and local religious beliefs.

One of the defining characteristics that sets Tham Phra apart is its unique accessibility, which is strictly by water. Visitors must take a scenic 1-kilometer long-tail boat trip through a winding canal lined with riparian vegetation before reaching the entrance trail. It is important to note that Tham Phra is a seasonal waterfall. Its spectacular flow and the vibrant atmosphere of its "natural water park" are only present during the monsoon season, typically from July to early October. During the dry season, the water vanishes completely, leaving behind a barren yet beautiful sandstone landscape. Visiting Tham Phra is therefore an opportunity to witness the dynamic and powerful transformation of nature through the seasons.

• From Bueng Kan city center, take Highway 212 towards Bung Khla, then turn right onto Highway 3024 towards Sok Kam. Follow signs to the "Tham Phra Pier." Park your vehicle and take a community-operated long-tail boat (approx. 10–15 mins) followed by a short 500-meter walk to the waterfall.

• Check Water Levels: The waterfall only flows from July to October; visiting outside this window will result in seeing only dry rock plateaus.

• Bring Spare Clothes and Waterproof Bags: Since swimming and sliding are the main activities, a change of clothes and protection for gadgets are essential.

• Wear Proper Attire: Choose snug clothing without metal zippers or buttons to prevent scratches and ensure safety while using the natural rock slides.

• Beware of Slippery Surfaces: Some sandstone areas can be extremely slippery due to algae; walk cautiously and wear shoes with good traction.

• Mind the Last Boat: Ensure you leave the waterfall area by 04:30 PM to catch the final community long-tail boat back to the parking pier.

Admission Fees:

• Boat Trip Approx. 20-50 THB per person (round trip).

• Sanctuary Entry Thai Adults 30 THB, Children 20 THB / Foreign Adults 400 THB, Children 200 THB.

Opening Hours:

• Operating Hours 08:00 AM – 05:00 PM Daily (Accessible only during the rainy season, typically from July to October each year).

• The last boat departing from the waterfall back to the pier leaves around 04:30 PM - 05:00 PM. Please plan your return trip accordingly.