Lam Khlong Ngu National Park

Lam Khlong Ngu National Park is a protected area in Thong Pha Phum District, Kanchanaburi Province, western Thailand near the Myanmar border. Established on 25 December 2000 as Thailand's 80th national park, it covers about 673 square kilometres of limestone mountains, dense mixed deciduous forest and river valleys. The park is notable for its extensive cave systems, including Sao Hin Cave with one of the world's tallest stalagmite columns, seasonal waterfalls and rich biodiversity.

Visitors can expect a remote, forested limestone landscape with guided cave exploration as the main focus. The park offers large caverns with stalactites, stalagmites and underground streams, jungle trails, viewpoints and waterfalls. Access to major caves requires a park ranger guide, trekking, wading and some climbing. Facilities are basic with a visitor centre and campsite, and the atmosphere is natural and adventure-oriented rather than developed for casual sightseeing.