| Site Type: | Pothole | | Site Status: | ASSI | | Council area: | Fermanagh & Omagh District Council | | Grid Reference: | H11833403 | | Bing maps: | 54.2552,-7.81893 | | Google maps: | 54.2552,-7.81893 | | Rocks |
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| Rock Age: | Quaternary (Holocene) | | Rock Type: | Limestone | | Interest |
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| Other interest: | cave, pothole |
| Summary of site: |
| This cave, extending over 200m, has two entrances which are independently named. The upstream entrance, Mastodon, has two interconnected crawls through a boulder-choked rift that enter a mud-choked chamber, about 20m wide and 90m long, with numerous small streams entering through fissures. These join the main subterranean flow of the Sruh Croppa River. | | Pollasillagh, the second entrance, opens into the northern (downstream) end of the chamber. Entry is by a small, boulder–covered hole in a modest depression and descends over boulders to an 8m descent to the chamber floor. At this end of the chamber there is a mazy crawl through more boulders to a flooded rift. A duck leads to a small chamber and sump. | | Mastodon was almost certainly linked with Pollthanarees and Cat’s Hole upstream and with John Thomas’s Hole downstream but is now divided by local roof collapses. |
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