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Marble Arch Karst; PollthainareesFermanagh
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Summary Full report
Site Type: Cave, Pothole
Site Status: PASSI
District: Fermanagh District Council
Grid Reference: H11733392
Rock Age: Quaternary (Holocene)
Rock Type: Limestone
Other interest: No data, No Data, cave, pothole

Summary of site:

This is a complex, convoluted cave with the Sruh Croppa River (that sinks into its own bed at Catís Hole) flowing at its deepest level. A tight, 4m descent through boulders ends at a 5m drop (avoided by a lateral course across a slope of mud and boulders to the river). Downstream the river zigzags over a length of 80m of spacious passage, varying in width from 5-20m, before sumping in a jumble of boulders which have yet to be dived.

In the upstream direction a crawl though more boulders emerges in a chamber floored by fallen blocks. Crawls from this chamber lead to a rift and to the west narrow passages and crawls give a glimpse into Catís Hole (but without a way through).

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