| Site Type: | Sinkhole | | Site Status: | ASSI | | Council area: | Fermanagh & Omagh District Council | | Grid Reference: | H14314118 | | Bing maps: | 54.31892,-7.78023 | | Google maps: | 54.31892,-7.78023 | | Rocks |
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| Rock Age: | Quaternary, Carboniferous (Asbian, Holocene, Visean) | | Rock Name: | Dartry Limestone Formation, Glenade Sandstone Formation, Meenymore Formation | | Rock Type: | Limestone, Sand, Sandstone | | Interest |
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| Other interest: | sinkhole |
| Summary of site: |
| Rahallen Sink 1 is another sink on the Meenymore Formation/Dartry Limestone junction, taking the drainage from Lough Nagor in the forest above. The water sinks into the limestone progressively over a short distance. |
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