Sai Yok Waterfall

Sai Yok Waterfall, commonly known as Sai Yok Yai Waterfall, is a scenic waterfall inside Sai Yok National Park in Sai Yok District, Kanchanaburi Province, western Thailand. It flows directly into the Khwae Noi River beneath limestone cliffs and dense forest. Notable for its picturesque setting, historical connection to King Rama V's 1888 visit and the World War II Death Railway, it is a popular stop for sightseeing, swimming and river rafting within the national park.

Visitors can expect a forest waterfall flowing over limestone cliffs directly into the Khwae Noi River inside Sai Yok National Park. The setting is surrounded by dense mixed deciduous forest and karst hills. Visitors can view the cascade from riverside platforms, swim in designated areas at the base, take photographs, and combine the visit with river rafting or kayaking on the Khwae Noi River. The site includes park facilities, walking paths, and nearby accommodation and camping areas.

The waterfall was visited by King Chulalongkorn (Rama V) in 1888, an event commemorated locally. During World War II the surrounding area was on the route of the Thai-Burma Death Railway constructed by the Imperial Japanese Army, with nearby sites such as Hellfire Pass and Krasae Cave reflecting that history.

The waterfall is a well-known natural landmark within Sai Yok National Park and holds recreational and natural heritage value as a protected forest destination for Thai and international visitors.