Na Yung-Nam Som National Park

Na Yung-Nam Som National Park is a protected forest park spanning Loei, Udon Thani and Nong Khai provinces in northeastern Thailand, with its western section in Pak Chom District, Loei. Established in 1975 as Thailand's eighth national park, it covers about 344 square kilometres of Phu Pan mountain range forests. Notable for dense mixed deciduous and dry evergreen forest, sandstone mountains, viewpoints such as Phu Ya U, and waterfalls including Yung Thong, it offers hiking and nature study.

Visitors can expect a forested mountain park on the Phu Pan range with dense mixed deciduous and dry evergreen forest, sandstone cliffs and viewpoints. The park has marked nature trails, viewpoints such as Phu Ya U and Pha Daeng, and seasonal waterfalls including Yung Thong Waterfall. Facilities are basic and focused on nature-based visitation with a visitor centre, camping area and viewpoints. The environment is quiet and natural, suitable for hiking, sightseeing and photography.

Declared as Thailand's 8th national park on 13 February 1975, covering approximately 344 square kilometres of the Phu Pan mountain range across Loei, Udon Thani and Nong Khai provinces to protect watershed forests, sandstone mountain ecosystems and wildlife habitat.