Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Fang Hot Spring in the northern highlands of Chiang Mai Province is a geothermal area near the Myanmar border where bicarbonate thermal waters emerge at temperatures reaching nearly 100°C through dozens of vents and geysers in a landscape of forest and farmland. The springs' dramatic steaming vents and boiling pools are set within a national park area that also encompasses some of Thailand's most biodiverse mountain ecosystems, with Doi Pha Hom Pok — the country's second-highest peak — providing a magnificent highland backdrop. Lower-temperature pools in the facility allow visitors to enjoy therapeutic thermal bathing in the traditional Thai wellness style, surrounded by the pristine mountain scenery of the far north.
Insider tip — Fang Hot Spring National Park in northern Chiang Rai shelters a field of geysers and sulfurous vents where water shoots up to two meters in the air from limestone fissures, one of Thailand's most dramatic geothermal displays. The park sits near the Myanmar border at around 500 meters elevation, and the surrounding teak and bamboo forest keeps temperatures significantly cooler than lowland Thailand. Bring eggs to hard-boil in the boiling pools, a ritual that local visitors treat as an essential part of the visit.