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Earth Science Conservation Review
| Noon's Hole-Arch Cave; Pollanaffrin | Fermanagh |
| Site number: | 407 | File Number: | H04 |
| ESCC: | IC | ||
| Locality Type: | Sinkhole | Status: | ASSI |
| Grid Reference: | H09354754 | ||
| Google maps: | 54.37652,-7.85687 | ||
| County: | Fermanagh | Council area: | Fermanagh & Omagh District Council |
| Period: | Quaternary, Carboniferous | ||
| Stages: | Asbian, Holocene, Visean | ||
| Lithostrat: | Dartry Limestone Formation, Knockmore Limestone Member | ||
| Site Description | |
|---|---|
| Description: | |
This consists of 240m of surveyed passage and is the flood sink for a large river with its source in the Edenybreslen area. This water probably feeds High Noon's. A major fault running E-W controls the entrance collapse doline but after a series of short vertical sections the passages are controlled by two sets of joints at 90° to each other. Parts of the passage past the two phreatic sections (Sump 1 and 2) display classic phreatic tube with a vadose trench. Small areas of breakdown have prevented further exploration. | |
| Notes: | |
Pollanaffrin is a feature of the Noon's Hole-Arch Cave area of the Belmore, Ballintempo and Tullybrack Uplands. For general information on the systems and features of the Noon's Hole-Arch Cave area, including this one, and a reference list, see site description 'Belmore, Ballintempo & Tullybrack Uplands; Noon's Hole-Arch Cave'. | |
| Keywords | |
|---|---|
| Rocks: | Limestone |
| Structures: | fault, joints |
| Geomorph: | breakdown, cave, doline, sinkhole |
| Measurements | |||||
|---|---|---|---|---|---|
| Length: | 240 m | Width: | Height: | ||
| Depth: | Area: | ||||
| Access | |
|---|---|
| Threats: | Dumping of household waste. |
| Record type: | ESCR report | ||
| Entered by: | Doughty, P.J. | ||
| Last updated: | 24 Dec 2003 | ||
| Enlander, I., Dempster, M. & Doughty, P., 2026. Noon's Hole-Arch Cave; Pollanaffrin, County Fermanagh, site details. [In] Earth Science Conservation Review. https://www.habitas.org.uk/escr/site.php?item=407. Accessed on 2026-11-08. |
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