Earth Science Conservation Review

Marble Arch Karst; PollthainareesFermanagh
Summary Full report
Site Type: Cave, Pothole
Site Status: ASSI
Council area: Fermanagh & Omagh District Council
Grid Reference: H11733392
Bing maps: 54.2543,-7.82047
Google maps: 54.2543,-7.82047
Rocks
Rock Age: Quaternary (Holocene)
Rock Type: Limestone
Interest
Other interest: cave, pothole
Summary of site:
This is a complex, convoluted cave with the Sruh Croppa River (that sinks into its own bed at Cat’s 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 Cat’s Hole (but without a way through).

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