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Marble Mountains (Vietnamese: Ngũ Hành Sơn, Chữ Hán: 五行山; lit. "five elements mountains") is a cluster of five marble and limestone hills located in Ngũ Hành Sơn District, south of Da Nang city in Vietnam. The five mountains are named after the five elements: Kim (metal), Thủy (water), Mộc (wood), Hỏa (fire) and Thổ (earth).
It contains limestone karst peaks with valleys. There are archaeological traces of human activity for more than 30,000 years, dating back from the Neolithic and Bronze Ages . Hoa Lư was the ancient capital of Vietnam, established in the 10th and 11th centuries.
Global distribution of major outcrops of carbonate rocks (mainly limestone, except evaporites). The English word karst was borrowed from German Karst in the late 19th century, [6] which entered German usage much earlier, [7] to describe a number of geological, geomorphological, and hydrological features found within the range of the Dinaric Alps, stretching from the northeastern corner of ...
Karst topography is a geological formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum. [1] It has also been documented for weathering -resistant rocks, such as quartzite , given the right conditions. [ 2 ]
In the karstic limestone formations (also known as carbonate karst), which occupy 5% of the natural forest area of Vietnam Long Son and Cai Bang have an important place in the floral and faunal wealth of the forests. Northeast Viet Nam has 36% of the country's 1.15 million hectares of rocky mountains out of which Lạng Sơn and Cao Bằng ...
Da Nang or Danang [nb 1] (Vietnamese: Đà Nẵng, Vietnamese pronunciation: [ɗaː˨˩ n̪a˧˥ˀŋ]) is the fifth-largest city in Vietnam by municipal population. [7] It lies on the coast of the South China Sea of Vietnam at the mouth of the Hàn River , and is one of Vietnam's most important port cities.
According to the assessment of UNESCO, "The karst formation of Phong Nha-Kẻ Bàng National Park has evolved since the Palaeozoic (some 400 million years ago) and so is the oldest major karst area in Asia" and "Phong Nha displays an impressive amount of evidence of earth's history. It is a site of very great importance for increasing our ...
Formed in Carboniferous/Permian limestone, the main Sơn Đoòng cave passage is the largest known cave passage in the world by volume – 3.84 × 10 7 m 3 (1.36 × 10 9 cu ft), according to BCRA expedition leader Howard Limbert. It is more than 5 kilometres (3.1 mi) long, 200 metres (660 ft) high and 150 metres (490 ft) wide.
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