At the eastern edge of Northeastern Thailand, where the Mekong River forms a natural boundary between Thailand and Laos, lies one of the country’s most dramatic landscapes.

Pha Taem National Park is a land of towering cliffs, seasonal waterfalls, wildflower fields, and extraordinary rock formations shaped by millions of years of geological change. During the rainy season, the park becomes especially vibrant as streams return to life, flowers bloom across sandstone plateaus, and lush greenery spreads across the landscape.

It is a place where nature, history, and geology come together along one of Southeast Asia’s great rivers.

Along the Cliffs of the Mekong

The name Pha Taem refers to a section of a long sandstone escarpment that stretches for many kilometers above the Mekong River.

These cliffs were formed as ancient sandstone layers were uplifted over time, creating dramatic viewpoints overlooking the river valley below. The area is best known for its prehistoric rock paintings, which gave Pha Taem its name. Painted thousands of years ago, these images depict fishing, hunting, community life, and the relationship between early inhabitants and the river that sustained them.

Today, visitors can follow a trail beneath the cliffs to view these remarkable artworks while also appreciating the immense natural beauty of the landscape.

The cliff-top viewpoint is also famous as one of the first places in Thailand to witness the sunrise. As the sun rises above the Mekong and illuminates the surrounding mountains and forests, the scenery reveals why this corner of the country has become one of Thailand’s most celebrated natural landmarks.

Waterfalls, Wildflowers, and Stone Sculptures

While the cliffs attract most first-time visitors, the rainy season reveals another side of Pha Taem National Park.

One of the most unusual attractions is Saeng Chan Waterfall, also known as the “Moonlight Waterfall.” Unlike a conventional waterfall flowing over a cliff edge, the water plunges through a circular hole in the sandstone above, creating a scene that resembles a beam of moonlight descending from the sky.

Another highlight is Soi Sawan Waterfall, one of the park’s most picturesque waterfalls. During the late rainy season, the sandstone plateau above the falls becomes covered with seasonal wildflowers. Small blooms emerge among grasses and mosses, transforming the rocky landscape into a natural garden.

Visitors seeking a quieter experience should also explore Pha Sok, where a small stream flows gently across the cliff before dropping into the valley below. Near the edge lies a crystal-clear natural pool that feels almost hidden within the landscape—a perfect place to pause and appreciate the serenity of the green season.

The park is also home to one of its most recognizable geological formations: Sao Chaliang Khu, the Twin Mushroom Rocks. These towering stone pillars were created through differential erosion, where softer rock layers gradually wore away while harder layers remained. The result is a pair of mushroom-shaped stone sculptures that appear almost too perfectly formed to be natural.

From prehistoric art and river cliffs to waterfalls, flowers, and remarkable geological formations, Pha Taem offers one of the most diverse green-season experiences in Thailand. It is a destination where every trail reveals another chapter in the story of nature’s creativity.

Quick Info : 

• Pha Taem National Park is located approximately 95 km from Ubon Ratchathani City. The park can be reached by private car, rental car, or a chartered van service with a driver and guide from Ubon Ratchathani Airport.

Map & Locations :

Pha Taem Viewpoint

https://maps.app.goo.gl/odPDTGjWDbopBX9G7

Soi Sawan Waterfall 

https://maps.app.goo.gl/2KLYjiV139vSp5gZ6

Saeng Chan Waterfall

https://maps.app.goo.gl/EpHp9FBixLHNwPek9

Pha Sok

https://maps.app.goo.gl/jKUZUiCySPeQ63WJ6

Sao Chaliang Khu

https://maps.app.goo.gl/zbr8E62QVjWFMwQM9