Miao Room

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A schematic representation of the Miao Room within the Gebihe cave system

Miao Room is the largest known cave chamber by volume in the world.[1] It is a part of the Gebihe cave system, which is located in Ziyun Getu He National Park, in Ziyun county of the Chinese province of Guizhou.[2] The chamber, discovered by a French expedition called Gebihe'89 in 1989, measures 852 metres (2,795 ft) in length, 191 metres (627 ft) in width, has an area of 154,500 square metres (1,663,000 sq ft) and a volume of 10,780,000 cubic metres (381,000,000 cu ft). In 2013 members of a British led expedition measured the chamber using 3-D laser scanners.[1][3]

Geology and formation[edit]

For more than 600 million years the area, in which the Gebihe cave system is located, was covered by sea and during this time it accumulated miles-thick layers of sediments, including limestone. The uplift of the area and then the erosion of the limestone layer created today's massive cavern system.[2]

The system spreads out in limestones and dolomite of Carboniferous and Permian age. Old cave levels have been cut by erosion and follow the base level lowering caused by Tertiary uplift.[4]

See also[edit]


  1. ^ a b Vergano, Dan (September 28, 2014). "China's "Supercave" Takes Title as World's Most Enormous Cavern". National Geographic News. National Geographic Society. Archived from the original on January 31, 2017. Retrieved December 20, 2014.
  2. ^ a b Funk, McKenzie (July 2014). "Empire of Rock". National Geographic. National Geographic Society: 126. ISSN 0027-9358. Retrieved July 29, 2014.
  3. ^ Funk, McKenzie (July 2014). "Empire of Rock". National Geographic. National Geographic Society: 123. ISSN 0027-9358. Retrieved July 29, 2014.
  4. ^ Barbary, Jean-Pierre; Bottazzi, Jean; Collignon, Bernard; Zhang, Dachang; Maire, Richard; Moudoud, Jean-Luc; Chen, Shicai (1991). "Le système de la rivière Gebihe (Ziyun, Guizhou) - Karsts de Chine, expé Gebihe 89 - Karstologia Mémoires n°4: Présentation physique, description du réseau". Cite journal requires |journal= (help)

Coordinates: 25°24′0″N 105°54′0″E / 25.40000°N 105.90000°E / 25.40000; 105.90000