Bo Klueng Hot spring is a private natural hot spring located in the land of Ratchaburi Mining and Agriculture Company 74 km away from the town in Baan Huai Pak, Moo 7 Tambon Suan Phueng, Suan Pueng District, Ratchaburi Province. Prayul Monayakul found this hotspring in 1925. This hot water is approximately 50-57 °C or 120-136 °F from the Earth's crust passing through small holes between rocks in the area of Ta Nao Sri mountain's foothills. The water has no smell or irritating minerals and is clear. It is consisted of carbon, salt and other minerals under 1 gram/litre. The hot spring has water flowing all year long even in the dry season. Even with less water, it is not drained. There are various rocks along the watercourse for about 300 metres.