Caves of County Roscommon (UBSS Proceedings v.23(1))
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Drew,D.P., and Hickey,C., 2004. Caves of County Roscommon.
UBSS Proceedings, 23(1) , pp 35-50 Download PDF.
Abstract: Although limestones are widespread in County Roscommon the number of karst features known were few until recent field investigation revealed that diagnostic karstic landforms such as sinks, springs and dolines are abundant. A number of caves have been explored and surveyed including the 750 m long Pollnagran; the only stream cave known in the county.