Mor Hin Khao

Mor Hin Khao is a natural sandstone rock formation in Phu Laen Kha National Park, Tha Hin Ngom Subdistrict, Mueang Chaiyaphum District, Chaiyaphum Province, northeastern Thailand. Known as the Stonehenge of Thailand, it consists of five groups of distinctive white sandstone pillars and monoliths formed by natural erosion over millions of years. The site is notable for its unusual pillar shapes, expansive plateau scenery and geological importance.

Visitors can expect to see five groups of tall, white to light-yellow sandstone pillars and boulders scattered across a forested plateau in Phu Laen Kha National Park. The area features open viewpoints, natural trails between rock groups, and panoramic views of surrounding forests and hills. Visitors can walk along marked paths to view the formations, take photographs, and explore nearby viewpoints such as Lan Hin and Pha Viewpoints within the park.

The sandstone formations are estimated to have formed during the Jurassic to Cretaceous periods, approximately 100-180 million years ago, through sedimentation and subsequent natural erosion. The site is protected as part of Phu Laen Kha National Park, established in 1991, for its geological and natural heritage value.

Locally known as Mor Hin Khao, meaning a group of white stone pillars, the site is a well-known natural landmark of Chaiyaphum Province and a symbol of the region's natural heritage. It is promoted as the Stonehenge of Thailand and is culturally significant as a scenic and educational destination for nature appreciation.