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  2. Oreum - Wikipedia

    en.wikipedia.org/wiki/Oreum

    Around 360 oreum are distributed throughout Jeju. Their formation and preservation are due in part to the high permeability of the volcanic rock. [1]Magma erupting under pressure can solidify into scoria, which may fall and pile up around a crater to form circular and elliptical scoria cones and cinder cones.

  3. Mulyeongari Oreum - Wikipedia

    en.wikipedia.org/wiki/Mulyeongari_Oreum

    The oreum is one of the secondary volcanoes around the Hallasan volcano, which is the highest mountain in South Korea. Through continuing scientific research, it is thought that Mulyeongari Oreum was formed by volcanic activity continuing for 2,500 years at the end of the third Cenozoic Era on Jeju Island.

  4. Hallasan - Wikipedia

    en.wikipedia.org/wiki/Hallasan

    A large volcanic crater over 400 metres (1,312 ft) in diameter tops the volcano. About 360 parasitic cones , or oreum ( 오름 ) in the Jeju language , are found on the volcano's flanks. Most of them are cinder cones and scoria cones , but there are also some lava domes and about 20 tuff rings near the coast and offshore, which were formed by ...

  5. Volcanic cone - Wikipedia

    en.wikipedia.org/wiki/Volcanic_cone

    A tuff cone, sometimes called an ash cone, is a small monogenetic volcanic cone produced by phreatic (hydrovolcanic) explosions directly associated with magma brought to the surface through a conduit from a deep-seated magma reservoir. They are characterized by high rims that have a maximum relief of 100–800 meters (330–2,620 ft) above the ...

  6. Geum Oreum - Wikipedia

    en.wikipedia.org/wiki/Geum_Oreum

    Geomeun Oreum (Korean: 검은 오름; Hanja: 黑岳), popularly called Geum Oreum (금오름; 今岳) and alternately called Geumak (금악; 今岳), [1] [2] is an oreum (small extinct volcano; parasitic cone) in Hallim, Jeju City, Jeju Province, South Korea. [3]

  7. Geomunoreum - Wikipedia

    en.wikipedia.org/wiki/Geomunoreum

    The oreum is a popular tourist attraction, and has been a Natural Monument of South Korea No. 444 since January 6, 2005. [3] [2] In 2007, the Geomunoreum Lava Tube System around the oreum was made a UNESCO World Natural Heritage Site, as part of the item Jeju Volcanic Island and Lava Tubes. [1]

  8. Yongnuni Oreum - Wikipedia

    en.wikipedia.org/wiki/Yongnuni_Oreum

    It is a cinder cone, and has a summit elevation of 247.8 m (813 ft), [1] [2] although it is around 88 m (289 ft) above the surrounding area. [4] It occupies an area of 404,264 m 2 (4,351,460 sq ft). [2] The oreum is considered beautiful, and has fragrant fields of grass and flowers. [1] The oreum is located in an area densely populated with ...

  9. Gama Oreum - Wikipedia

    en.wikipedia.org/wiki/Gama_Oreum

    The oreum is named for and said to resemble gamasot, traditional Korean pots. [3] [4] An alternate pronunciation for the name is Gamae Oreum (가메오름), and the name's Hanja is read as "Buak". [4] The oreum is 140.5 m (461 ft) above sea level, and 51 m (167 ft) higher than the surrounding area.