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Shannon Cave
Shannon Cave is an active stream passage cave in southern Ulster.
At vertical depth, it stands joint sixth with Poulnagree in Munster in the deepest caves of Ireland.〔(【引用サイトリンク】 url=http://www.ukcaves.co.uk/country-roireland-deepest )〕〔(【引用サイトリンク】 url=http://www.ukcaves.co.uk/country-nireland-deepest )〕 The cave is recorded at in length (making it the sixth longest on the island Ireland),〔(【引用サイトリンク】 url=http://www.ukcaves.co.uk/country-roireland-longest )〕〔(【引用サイトリンク】 url=http://www.ukcaves.co.uk/country-nireland-longest )〕 but exploration is ongoing and further passage is expected to be found.〔
== Description ==
The cave consists in the main of a large mainstream passage running to a terminal sump. The water flowing in the cave has been dye traced to Shannon Pot, two kilometres to the west of the terminal sump, which is the traditional source of the River Shannon. Inlets to the main passage are numerous. Some, such as the large "Mistake Passage" have been pushed only a short distance. Since the cave is undergoing active exploration, there remain many issues to be sorted out and the sinks for many of these inlets remains unclear. The stream passage itself is of considerable proportions in parts, but also contains many higher level fossil passages which have been deserted by the stream. The cave contains numerous calcite formations, with large amounts of helictites in places. Boulder chokes are frequent with several parts of the cave being quite unstable, especially the JCP passage.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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