Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Bo Khlueng Hot Stream in Ratchaburi province, western Thailand, is a natural geothermal stream where bicarbonate-rich hot water flows along a jungle creek, creating naturally warm bathing pools accessible to visitors in a lush tropical forest setting. The site, within easy reach of Bangkok and popular with Thai families and weekend visitors, retains a pleasantly undeveloped and natural character unlike the more commercialised hot spring resorts of northern Thailand. The surrounding Ratchaburi countryside, known for its traditional arts and the Khao Bin cave temple, complements a visit to this accessible natural thermal site.
Insider tip — Bo Khlueng Hot Stream in Ratchaburi Province flows as a genuine geothermal stream through dense secondary forest, where sulfurous water at 42°C carves shallow pools ideal for foot soaking and wading. The site lies within a day-trip radius of Bangkok yet sees far fewer visitors than better-known northern Thai springs. The surrounding Tenasserim Hills shelter hornbills and gibbons whose calls punctuate the misty mornings. Local vendors sell soft-boiled eggs cooked in the stream — a quintessential Thai hot-spring ritual.
