dong Dashidong - 大石洞

Détail


Nom de la grotte : Dashidong - 大石洞
Autres noms : Big rock cave
Province, Préfecture, District :
Yunnan 云南省, Kunming 昆明, Anning
Latitude Nord - Longitude Est :
24.82090 - 102.46514
Altitude (m) : 1940
Développement (m) : 1 394
Profondeur (m) : 39
Profondeur - / + (m) : 22 / 17
Volume (m3) :
1Entrée : Dashidong 大石洞,

Carte



Description 1



Da Shi Dong (Big Rock cave)

The cave is located 800 m S-SE from Houchang village (Ermu village) Kunming District

WGS Coordinates: N24.82090 E102.46514

The entrance is opened on the cliff, formed the SW slope of the blind valley (uvala - 50 m wide x 80 m long). Little stream runs in the bottom and sinks just in front the entrance and joins to a bigger underground river. The catchment area of the stream is large, so in the cave there is a danger of flood. The cave is developed along 3 main fissures with directions E-W, NW-SE and NE-SW.

The entrance is 27 m wide and 17 m high and disposed at 1940 m altitude. It shows in a large passage (hall) – 48 m long, ~ 20 wide and high within 17 – 12 m, covered with boulders and clay. Multiple smaller entrances are visible in the rocks. Further the passage begins to get lower and lead to a little room (high 1.30 m.) – the first crossing of the cave. Here the little stream springs and runs through 77 m of narrow passage, ended by sump (or siphon). The ending is a typical big clay stopper, so probably the gallery continues, but only the water can go trough.

In the NE side of the room starts the main gallery of the cave. Its total length is 676 m, but in the middle of this distance the cave joins a branch with length 355 m, direction of development SE. Both galleries go upstream and with small slope. About 250 m from the entrance, there is a 5 m drop with water on the bottom (water is about 1-1.5 m deep). The NE gallery alternates large halls with high ceiling (up to 22m+) and huge formations and narrow passages following the river.

The SE gallery is much smaller with only few bigger halls and a lot of very narrow passages. On many places it looks like it will end and you need to crawl in the water a lot. There is a vertical chimney (7-8 m easy to climb), where the water is crossing a plate with falling water. After it's half, you can find a lot of household waste, so it should be connected (and close) to a place, where the water comes in and the local people use as a dump. Total length: 1394 m; Depth: 39.30 (-22.6 m / +16.7 m). The cave is surveyed at: 8 November 2011.

Alexey Zhalov edited by, Chinese-bulgarian-greek speleological expedition “Gaolingongshan 2011” in Yunnan province, China. (2012)
48p., 65 photos couleur, 9 figures, Bulgarian Federation of Speleology, April 2012.
Analyse :
This report details the joint Chinese-Bulgarian-Greek expedition carried out by members of Bulgarian Federation of Speleology and Yunnan Institute of Geograhpy & China Exploration & Research Society (CERS ) Yunnan branch, Yunnan Province, China. Yunnan 2012 was a 4-week, 13 person winter caving expedition. This expedition involved a first speleological exploration of the caves of Gaolingongshan and to known some unexplored areas on the mountain. Major finds included the logging and exploration of 8 new caves on the territory of the mountain and its vicinity. The most significant caves which the team explored were far from the main exploration area close to Kunming city. Among them are the longest caves explored during the expedition Yenze Dong (Swallow cave) – 1514 m and Da Shi Dong (Big rock cave) - 1394 m. During the expedition were mapped 11 caves with a total length of the galleries 4972 m and depth 429.60 m (-318.2/+ 89.4)

2145 caractères - Lu 90 Fois

Bibliographie 1



Alexey Zhalov edited by, Chinese-bulgarian-greek speleological expedition “Gaolingongshan 2011” in Yunnan province, China. (2012)
48p., 65 photos couleur, 9 figures, Bulgarian Federation of Speleology, April 2012.
This report details the joint Chinese-Bulgarian-Greek expedition carried out by members of Bulgarian Federation of Speleology and Yunnan Institute of Geograhpy & China Exploration & Research Society (CERS ) Yunnan branch, Yunnan Province, China. Yunnan 2012 was a 4-week, 13 person winter caving expedition. This expedition involved a first speleological exploration of the caves of Gaolingongshan and to known some unexplored areas on the mountain. Major finds included the logging and exploration of 8 new caves on the territory of the mountain and its vicinity. The most significant caves which the team explored were far from the main exploration area close to Kunming city. Among them are the longest caves explored during the expedition Yenze Dong (Swallow cave) – 1514 m and Da Shi Dong (Big rock cave) - 1394 m. During the expedition were mapped 11 caves with a total length of the galleries 4972 m and depth 429.60 m (-318.2/+ 89.4)
Source :


Images 0



Topographie 1



topographie Dashidong 大石洞
Source : FBS/CERS/YIG

Expédition 1


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




Recherche