Na Yung Nam Som Forest Park is situated in a significant forest area bordering Udon Thani and Nong Khai provinces, resulting in extremely high biodiversity. Its territory encompasses dry evergreen forest, mixed deciduous forest, and deciduous dipterocarp forest. The core area of the park maintains its natural integrity, making it a crucial headwater source for many surrounding communities in the Na Yung and Nam Som districts.

The main highlight and heart of the park is Huai Sai Yai Waterfall, a large, multi-tiered waterfall known for its height_ and beauty. The cascade maintains water flow almost year-round, with the volume peaking particularly during the rainy season, offering a refreshing and popular spot for tourists to relax and take photographs. Furthermore, Huai Sai Yai Waterfall marks the beginning of several nature trails that extend deep into the forest, allowing visitors to encounter rare plant species and small wildlife up close.

In addition to the splendor of the waterfall, Na Yung Nam Som Forest Park features Pha Daeng (Red Cliff), a steep rock face that serves as the park's most outstanding viewpoint. From here, visitors can gaze upon the vast, continuous green expanse of the forest stretching to the horizon. The views are especially stunning during sunrise or sunset, making them prime times for photography and viewing the landscape. The hike up to Pha Daeng requires a moderate level of effort and trekking, but the panoramic reward is well worth the climb.

The park also contains several Buddhist sites and small monasteries (Samnak Song), which are used as peaceful places for meditation and spiritual retreat amidst the quiet and shady environment of the dense forest. Visitors are welcome to pay respects at the shrines and participate in religious activities as appropriate. Basic facilities within the park, such as restrooms and designated camping areas, are provided for those wishing to stay overnight and fully immerse themselves in the natural surroundings.

• Travel by private car from Udon Thani city, take Highway No. 2 towards Nong Khai, then turn onto the road to Nam Som District and follow the signs to the park. The total distance is approximately 90-100 kilometers.

• Visiting during the late rainy season and early winter (around October-December) is recommended to enjoy the waterfall's abundant water and cool weather.

• Bring mosquito repellent and comfortable hiking shoes.

• Do not feed wild animals, and dispose of waste only in designated areas.

Admission Fees:

• Thai Adults: Current information indicates a standard national park fee is prepared at 40 baht per person.

• Thai Children: The prepared fee is 20 baht per person.

  • Note: Some sources suggest the park might not yet be officially collecting fees but is prepared to use this rate. It is highly recommended to be prepared for the fee or confirm with the staff upon arrival.

• Camping Fee (for self-setup tents): The standard rate is 40 baht per person per night.

• Foreign Visitors: The specific rate is not consistently detailed, but national park fees for foreigners are typically significantly higher than the Thai rate (the standard is often around 200-300 baht).

Opening Hours:

• The park is generally open daily from 08:00 AM to 04:30 PM.