Phu Chong Na Yoi National Park was established on June 1, 1987, as Thailand’s 53rd national park. It covers an area of more than 686 square kilometers (around 428,750 rai). The park lies along the southern edge of the Phanom Dong Rak mountain range, bordering Laos and Cambodia, making it significant both ecologically and strategically.

The park’s terrain consists of high mountains, plateaus, and valleys, with numerous streams flowing down to form scenic waterfalls. It is an important watershed area for the Dom River, Lam Dom Yai River, and the Mun River, which enrich the biodiversity of the region.

The ecosystem is highly diverse, including evergreen forest, mixed deciduous forest, dry dipterocarp forest, and tropical rainforest. Important tree species include Yang Na (Dipterocarpus alatus), Paduak (Pterocarpus macrocarpus), Lagerstroemia Indica, Shorea, and several rare plants. Seasonal herbs and wild mushrooms can also be found in abundance, especially during the rainy season.

Wildlife is equally diverse, with species such as serow, barking deer, sambar deer, pig-tailed macaque, white-handed gibbon, wild boar, and leopard cat. The park also hosts rare birds including peacocks, hornbills, and various species of woodpeckers. Numerous butterflies and insects add to the park’s ecological richness.

Major attractions within the park include:

• Huai Luang Waterfall: The largest waterfall in Ubon Ratchathani, approximately 40 meters high with a wide pool at the bottom, perfect for relaxation.

• Than Thip Waterfall: A multi-tiered waterfall hidden in the forest, ideal for trekking and photography.

• Thung Na Mue Waterfall: A small but charming waterfall, especially spectacular during the rainy season.

• Pha Chu Viewpoint: Known as the “Cliff of Loyalty,” this spot offers panoramic views of the vast forest and mountain ranges spanning across Thailand, Laos, and Cambodia, with a large Thai national flag standing proudly on the cliff.

Activities in the park include trekking, birdwatching, camping, and photography. During the rainy and cool seasons, visitors can enjoy the beauty of full-flowing waterfalls and misty morning landscapes.

Beyond its natural wonders, the park also preserves local culture. Nearby communities maintain traditional practices such as the Month Six merit-making festival, folk dancing, and the rocket festival. Visitors can thus experience both nature and local cultural heritage.

• By car: From Ubon Ratchathani city, take Highway No. 217 towards Na Chaluai District, a distance of about 140 kilometers.

• By bus: From Ubon Ratchathani Bus Terminal, take a bus to Na Chaluai District, then continue by local songthaew or motorcycle taxi to the park.

• Wear proper footwear and clothing for trekking.

• Bring drinking water and snacks, as shops in the park are limited.

• Do not collect plants or animals from the park.

• Be cautious of insects and poisonous creatures during the rainy season.

Admission Fee

• Thai Nationals: Adults 40 THB, Children 20 THB

• Foreigners: Adults 200 THB, Children 100 THB

Opening Hours

• Daily, 06:30 – 16:30