dong Dongbadong - 洞 坝洞

Détail


Dongba est une entrée de :
Qikengdong - 气坑洞
Nom de la grotte : Dongbadong - 洞 坝洞
Autres noms : Cave Of The Flat Land
Province, Préfecture, District :
Chongqing 重庆, Chongqing , Wulong 武隆县
Latitude Nord - Longitude Est :
29.22938 - 107.91981
Altitude (m) : 880
Géologie :

7Entrée : Dongbadong 洞 坝洞, Qikengdong 气坑洞, Miaokeng , Lanmushudong , Liuchiaokouxiadong 六尺凹口下洞, Xiaoguchiwandong , Miaokeng 2 ,

Carte



Description 1



Dong Ba is the upstream active sink for the river which flows north-northwest from Tianxing village to the Furong Jiang. The cave is reached by walking 100 metres north-northwest from the centre of Tianxing village, to the head of the westerly trending valley which descends to the Furong Jiang. Follow the path down the right hand side of the valley to a small hamlet (approximately 30 minutes). From the house, drop down to the valley bottom and follow the dry stream bottom to the cave entrance.

The stream is channeled directly into this impressive 20 metre high, 12 metre wide entrance which is situated on a major joint on the down-dip side of the valley (the north side). A bedding plane provides a balcony on the left and a slope of large boulders descends to a short, 3 metre, pitch with a boulder belay. A few metres further is the impressive 37 metre entrance pitch which exposes the alternating black and grey limestones beds particularly well. At the bottom a series of low passages and crawls (which sump when the sink is taking water) leads to climbs and a series of short pitches in wonderful, clean-washed cave.

After about ten of these smaller pitches and climbs a 45m pitch is met and then three pitches of about 10m drop into a narrow passage carved along a calcite vein. A small slot at the end of this bells out into a much larger 108m pitch. A short section of gravel floored horizontal passage and a further pitch mark the limit of exploration in 1996. (No rope!)

YGE96(W)(S);YGE94 p75(S),76;2002



Analyse :

1522 caractères - lu : 142 Fois


Bibliographie 5



SENIOR, Kevin J. (ed.) (1995): The Yangtze Gorges Expedition: China Caves Project 1994.-
Cave and Karst Science vol.22 no.2 / Oct 1995: 53-90. (maps. photos. surveys).
This was the latest in a collaborative expedition involving British speleologists and karst scientists from the Institute of Karst Geology in Guilin. This paper presents the results of exploration in four study areas within Sichuan Province and 13.5 km of cave passages were surveyed. The Xio Zhai Tien Ken to Mie Gong He Dong cave system, a 4.5 km through trip, is the deepest cave in China at -964 m and the Xio Zhai Tien Ken doline is probably the largest doline in the world at 135.3 million cubic metres (both Xin Long area). Xin Lou Kou dong (Jiang Kou area) is -215 m deep; Lungci dong (Ba Xian area) has a length of 1.08 km. Hydrology and cave development are discussed and there is a brief note on cave conservation. (AUTHORS; RM; RB).
Source : BBS

http://www.brianjudd.pwp.blueyonder.co.uk/china:china96/jaingkou/wulong3/wulong3.html#top

Site sur les projets China-Caves et notamment les expé Yangtze Gorges expeditions 94 et 96 et les perspectives. Topos, photos, cartes, descriptifs, anecdotes...
Source : Web

http://www.hongmeigui.net/
http://www.hongmeigui.net/
Site sur les campagne d’expéditions du club de Hong Mei Gui. Dans les provinces du Guizhou, Guangxi, Yunnan. Explorations dans les comtés de Leye, Nandan, Guilin. Données chiffrées sur les cavités topo données topo et photo chronique d’expédition.
Source : Web

LYNCH, Erin
Descent, 171 : 26-29. 9 photos, survey.
Exploration of Qikeng Dong and Dong Ba, Chongqing, in an unsuccessful attempt to forge a connection. (CH).
Source : BBS

VAN IEPEREN, Taco
Canadian Caver, Issue 60 : 33-37. 5 photos, 1 location map, 1 survey.
Account of international expedition to Tian Xing area of southern China where a small group pushed Qikeng Dong to be the deepest in China at 920 m depth, as well as extending Dong Ba to 7234 m length and 656 m depth. (CJL).
Source : BBS


Images 0



Topographie 0




Expédition 4


Cette grotte a été explorée au minimum par cette (ces) expédition (s) :




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