Craig Cerrig Gleisiad a Fan Frynych National Nature Reserve - Photo Tour
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![Orange rock hair](/p1080/craig-cwm-du-orange-rock-hair.jpg) Orange rock hair, trentepohlia aurea - a species of green algae
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Keywords: plants, Craig Cerrig Gleisiad a Fan Frynych National Nature Reserve, nature reserves, Brecon Beacons National Park, Powys