012 Out on the Causeway – The rusty coloured patches of newly broken rock are due to iron minerals in the limestone. The weathered surface of the Carboniferous Limestone rocks of the Worms Head Causeway in Gower, South Wales, is usually dull grey or light brown.
Jessica's Nature Blog 
Excellent pictures! This one looks like a fault surface with slickenlines indicating the movement direction(s?)
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Thank you, Richard. I am always interested in learning more about the pictures I take.
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