DescriptionDetail of 'South Stack Formation' - a geological term for the cliff face at Ynys Lawd (South Stack) 09.jpg
Cymraeg: 'Ffurfiad Ynys Lawd' neu 'South Stack Formation' - term daearegol wyneb y clogwyn yn Ynys Lawd. Mae ei strata yn cynnwys tywodfeini a siâl rhyng-wely sydd wedi cael eu gorgyffwrdd gan blygiadau enfawr.
English: Detail of 'South Stack Formation' - a geological term for the cliff face at Ynys Lawd (South Stack). Its strata includes sandstones and interbedded shales which have been contorted by large folds and crumples.
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