Oweynagat Cave

Oweynagat lies within the Rathcroghan complex near Tulsk, Co. Roscommon, a landscape with many archaeological sites. The cave itself is a natural karst passage that formed along a fissure in Carboniferous limestone. Its entrance, however, is a human construction: a souterrain of dry-stone masonry that descends through an earthwork which may once have been a burial mound. The builders appear to ...