ERRATICS, Deirdre O'Mahony jogs our schoolroom memories, are rocks which have been transplanted erratically, unpredictably, by glacial action. Herrock is the Burren's limestone. Her response to it is to trace the actual shifting shadows of its boulders as generations rubbed brass and granite in country churchyards. Once rubbed, O'Mahony's canvases are punished with paint and dust, and hung, tabbed from a pole as fashionable as curtains, great tapestries up to six metres square, from the Context's classically high ceiling.
Subjective as passing clouds, one shows a huge grey footprint in wet and boggy blackness. Another, organic as a leaf, its surface a weft of veins and tendrils, is textured golden as lichen dyeing a giant's cloak.