Earth Science Conservation Review

Summary Full report
Western Marlbank; Hammer PotFermanagh
Site Type: Pothole
Site Status: ASSI
Council area: Fermanagh District Council
Grid Reference: H10153477
Google maps: 54.26152,-7.84499
Rocks
Rock Age: Quaternary (Holocene)
Rock Type: Limestone
Interest
Other interest: cave, pothole, sump

Summary of site:

A scruffy hole at the bottom of a small shake hole opens on to a boulder slope above a short pitch. A traverse leads down through a series of tight squeezes and small chambers to a final 9m drop above a sump pool. The pool was dived and proved to be a north-west/south-east trending flooded passage. Upstream, 45m of passage opens into an air bell with a shaft above. Beyond this the flooded section has been explored for a further 15m, from the bell to a point in a passage a little over half a metre high into clear water.

Downstream, 45m of narrow flooded rift opens into a wide passage. The murky water has prevented further exploration.

 Enlander, I., Dempster, M. & Doughty, P., 2024. Western Marlbank; Hammer Pot, County Fermanagh, site summary. [In] Earth Science Conservation Review.
https://www.habitas.org.uk/escr/summary.php?item=367. Accessed on 2024-12-26

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