mata air panas

West Flores, East Nusa Tenggara, Indonesia, Indonesia

Location: West Flores, East Nusa Tenggara, Indonesia, Indonesia
Water type: sulfurous
Temperature: 38 °C
pH: 6.5

Water profile

Thermicity

Neutral

38 °C

LowHigh

Soothing — neither hot nor cold, perfect balance.

Mineralisation

Bio-active

LowHigh

Rich in active gases or metals — a strong mineral character.

Buoyancy

Standard buoyancy

LowHigh

Soft water — natural, classic buoyancy.

SoufreSulfuresSulfates

Mata Air Panas, meaning 'Hot Spring Source' in Indonesian and Malay, is a natural sulfurous geothermal spring — the point where heated volcanic mineral waters emerge directly from the earth in one of Indonesia's thousands of geothermally active locations. The spring represents the foundational form of Indonesian thermal heritage: the raw geothermal source encountered before resort development or formal bathing facilities transform the natural flow into commercial infrastructure. Community members bathe in the naturally emerging sulfurous waters to enjoy the volcanic minerals' reputed comforts for the skin and for physical relaxation, continuing the direct relationship between Indonesian communities and their extraordinary volcanic landscape.

Insider tip — This unnamed hot spring on the island of Flores sits within the Lesser Sunda volcanic arc, where geothermal activity surfaces in multiple locations between the island's chain of volcanic peaks. The site is rudimentary, accessed via unpaved tracks through dry savanna landscape that contrasts sharply with wetter Sumatran spring settings. Water temperature is steady and the sulfur odor is pronounced. Combine with visits to the iconic three-colored crater lakes of Kelimutu, roughly 80 km to the east.

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