Sao Chaliang

Sao Chaliang is a group of natural sandstone pillars located inside Pha Taem National Park in Huai Phai, Khong Chiam District, Ubon Ratchathani. The mushroom-shaped rock formations were created by long-term wind and water erosion of sandstone. Situated near the Mekong River border area, it is one of the most photographed geological landmarks in the park and is notable for its distinctive balanced-rock appearance.

Visitors can expect to see mushroom-shaped sandstone pillars standing on narrow bases in an open sandstone plateau within Pha Taem National Park. The site features an arid, rocky landscape with scattered forest, walking paths and viewing areas around the formations. Visitors can walk around the pillars, take photographs and enjoy views of the surrounding plateau. The area is exposed with little shade and is typically visited as a short stop within a tour of Pha Taem National Park.

Sao Chaliang is a geological feature formed by millions of years of erosion of Phra Wihan sandstone. The pillars illustrate natural weathering processes of the Khorat Plateau and are protected as part of Pha Taem National Park, established in 1991 to conserve the region's sandstone landscapes and prehistoric rock paintings.