Phu Pha Lek National Park

Phu Pha Lek National Park is a protected mountainous area spanning Kalasin and Sakon Nakhon provinces in northeastern Thailand, with its Kalasin section in Kham Muang District. Established in 2009 as Thailand's 107th national park, it covers about 419 square kilometers of the Phu Phan range. The park is known for forested peaks, sandstone cliffs, viewpoints such as Pha Suriyan and Phu Ang So, seasonal waterfalls, and dinosaur fossil sites.

Visitors can expect a forested mountain landscape on the Phu Phan range with sandstone plateaus, cliffs and viewpoints overlooking the surrounding plains. The park offers nature trails through dry dipterocarp and mixed deciduous forest, seasonal waterfalls such as Kham Hom Waterfall, viewpoints like Pha Suriyan and Phu Ang So, and areas with dinosaur fossil discoveries. Facilities are basic and focused on nature-based recreation, hiking, photography and camping in designated areas.

Declared as Thailand's 107th national park on 23 December 2009, Phu Pha Lek protects a section of the Phu Phan Range. The area is geologically significant for its sandstone formations and Cretaceous dinosaur fossil sites, with excavations revealing sauropod fossils that contribute to understanding of the region's prehistoric past.

The park lies in the Isan region and is associated with local Phu Thai and Isan communities. The forested Phu Phan mountains have traditionally been important for local livelihoods and are now valued for nature conservation, education and eco-tourism.