Rock Layers at Waulkmill Bay 5 – Water-worn sedimentary rock strata from the Eday Group of the Old Red Sandstone Supergroup on the north-east side of Waulkmill Bay on Mainland, Orkney, June 2018
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Rock Layers at Waulkmill Bay 5 – Water-worn sedimentary rock strata from the Eday Group of the Old Red Sandstone Supergroup on the north-east side of Waulkmill Bay on Mainland, Orkney, June 2018