Mount Sibayak ( id, Gunung Sibayak) is a

stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and p ...

overlooking the town of

Berastagi Berastagi ( nl, Brastagi), is a town and district of Karo Regency situated on a crossroads on the main route linking the Karo highlands of Northern Sumatra to the coastal city of Medan. Berastagi town is located around south of Medan and abou ...

in northern Sumatra,

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

. Although its last eruption was more than a century ago,

geothermal activity Geothermal activity is a group of natural heat transfer processes, occurring on Earth's surface, caused by the presence of excess heat in the subsurface of the affected area. Geothermal activity can manifest itself in a variety of different phen ...

in the form of steam vents and

hot spring A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by c ...

s remains high on and around the volcano. The vents produce crystalline

sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formul ...

, which was mined on a small scale in the past. Seepage of sulfurous gases has also caused acidic discolouration of the small

crater lake Crater Lake (Klamath: ''Giiwas'') is a volcanic crater lake in south-central Oregon in the western United States. It is the main feature of Crater Lake National Park and is famous for its deep blue color and water clarity. The lake partly fills ...

. Sibayak is a term from the

Karo Karo may refer to: Ethnic groups * Karo people (East Africa), a group of tribes in East Africa * Karo people (Ethiopia), an ethnic group from Ethiopia * Karo people (Indonesia), the indigenous people of the Karo Plateau in North Sumatra Language ...

Batak Batak is a collective term used to identify a number of closely related Austronesian ethnic groups predominantly found in North Sumatra, Indonesia, who speak Batak languages. The term is used to include the Karo, Pakpak, Simalungun, Toba, ...

language referring to a founding community. It is relatively easy to climb and has been a

tourist attraction A tourist attraction is a place of interest that tourists visit, typically for its inherent or an exhibited natural or cultural value, historical significance, natural or built beauty, offering leisure and amusement. Types Places of natural ...

since colonial times. File:Gunung Sibayak 2015-05-24.jpeg, Crater of Gunung Sibayak. Mount Sinabung in the back. File:COLLECTIE TROPENMUSEUM Grand Hotel Brastagi aan de voet van de vulkaan Sibayak TMnr 60021770.jpg, Mount Sibayak in 1920s File:COLLECTIE TROPENMUSEUM De Sibajak raja berampat - de zogenaamde viervorsten - met hun vrouwen Karolanden Noord-Sumatra TMnr 10005425.jpg, The "Sibajak raja berampat", the so-called four princes with their wives, Karolanden, North Sumatra (1914-1919) On July 11, 1979, a Fokker F28 operating under Garuda Airlines crashed in Mount Sibayak.

References

External links

Photos of gunung Sibayak and gunung Sinabung
Sibayak Sibayak Sibayak Sibayak Volcanic crater lakes Geothermal energy in Indonesia Landforms of North Sumatra {{NSumatra-geo-stub

See also

References

External links