Sai Yok National Park Kanchanaburi Province
- Sai Yok National Park is west of Erawan National Park and is between the Myanmar border on its west and highway 323. It is 100 kilometers west of Kanchanaburi City and comprises an area of some 500 square kilometers.
- This is limestone karst country with Limestone Forest, Mixed Deciduous Forest, Deciduous Dipterocarp Forest and Tropical Evergreen Forest.
- Sai Yok is famous for its karst pinnacles and soaring cliffs, similar to those in Ao Pang nga Bay but here inland. The top elevation is 1,328 meters. The Park also features limestone formed waterfalls and large caves.
- The climate is monsoon with an annual rainfall of 1,150 mm. It has three seasons, the hot dry period of March to May inclusive, the rainy seaon of May to October inclusive and the cooler dry seaon of November to Feruary inclusive.
Tourist places of interest in Sai Yok National Park include;
- Sai Yok Waterfall. The feeding stream divides into two flows before cascading directly into the Khwae Noi River. The north side flow stream falls from a big rock at 8 metres high. The southern stream cascades from a higher elevation through steps into the river.
- Sai Yok Noi Waterfall. This famous waterfall originates from a spring, flowing through shady forest then cascading over limestone rock under shady trees.
- Daowadueng Cave. Daowadueng Cave of the most famous and beautiful caves in Thailand, this white cave was discovered in 1972. Daowadueng Cave is 100 metres deep and is divided into 8 chambers, each are named after its lime formations, such as chandelier chamber, pagoda chamber and curtain chamber.
- Lawa Cave. Although it has tiny entrance, the cave surprises visitors with huge chambers inside. Naturally beautified with stalagmites and stalactites, the big chamber is decorated like a big theatre. Lawa Cave is situated on the south of the park and is 20 kilometres from Sai Yok Waterfall on the water way.
- Khwae Noi River. The Khwae Noi River flows through different landscapes, from strange-look islands, deep limestone canyon and sandy beach and rapids. This is a popular river for rafting.
- For wildlife in Sai Yok one can see over 140 species of birds, the famous red, purple and white Regal Crab, a dozen species of Bats including the World's smallest bat, Kitti's Hog Nosed Bat. Some 50 species of mamals live in the Park, including Tigers, Leopards, Sambar Deer, Barking Deer, White Handed Gobbon, Stumped and Long Tailed Macaques, Asian Elephants and more.