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Cisolok Geysers and Hot Springs

Cisolok Geyser, Indonesia
Cisolok Geyser / Wikimedia Commons, Tropenmuseum of The Royal Tropical institute, taken in 20 October 1929. CC BY-SA 3.0

Main characteristics

Coordinates: 6.9335 S 106.4536 E
No:216        (list of all attractions)
Category:Springs, Geysers
Values:Geology, Visual
Rank:5
Address:Asia, Indonesia, West Java, Sukabumi regency, 4 km north-west from Cisolok (direct line)
Alternate names:Tjisolok Geyser, Cipanas Cisolok, Mata Air Panas Cisolok

The best known geysers of Indonesia are found among Cisolok Hot Springs. Here are located three - four geysers, spouting hot water up to 5 m high.

Hot river

Hot springs in the bed of small stream and on the banks of it are found over the distance of some 400 metres. Hot water has deposited sinter and travertine along the banks of stream.

Here are six large springs - the most powerful one is spewing 35 l of hot water per second. Several springs are located below the level of river. Some though have deposited a cone of sediments and are rising above the stream and are spouting the water up to 4 - 5 m high.

Possible image of Cisolok Geyser, Indonesia
Possible image of Cisolok Geyser / Wikimedia Commons, Tropenmuseum of The Royal Tropical institute, taken around 1921. CC BY-SA 3.0

Water temperature in the springs is 90 - 100 °C - and often it is above the temperature of boiling. Temperature of river before the springs is approximately 28°C - after the mixing with hot springs the river is some 34 °C warm.

Volcanic heat

Geochemical investigations show that the heat is coming from the nearby Gunung Halimun or Salak volcanoes. Hot springs have existed here for more than 10 000 years.

Cisolok Geyser, Indonesia
Cisolok Geyser / Wikimedia Commons, Tropenmuseum of The Royal Tropical institute, taken in 1949. CC BY-SA 3.0

The temperature of water in depth here is between 160 - 200 °C. Mineralogical analysis shows that in the past Cisolok springs were warmer - in the depth water was heated up to 220 °C.

Resort

Cisolok Geyser, Indonesia
Cisolok Geyser - closer view / Wikimedia Commons, Tropenmuseum of The Royal Tropical institute, taken in 1949. CC BY-SA 3.0

In this area is well felt a smell of H2S. Sulphurous water is believed to have curative properties and over the last decades around Cisolok Hot Springs is developing a small resort - although in reality there is little sulphur in hot springs. Everyone can see the geysers for free and walk in the warm river, but there are made also some pools, where one should pay for bathing.

Map

See Cisolok Geysers and Hot Springs on the map of Indonesia!

References

  1. Niniek Rina Herdianita, Wulandari Mandradewi Evolution of Cisolok - Cisukarame Geothermal System, West Java - Indonesia, Based on Its Surface Manifestation. Proceedings of World Geothermal Congress 2010. Bali, Indonesia, 25-29 April 2010. Accessed on May 30, 2011

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