An excellent example of a swallow hole in Carboniferous limestone on Great Orme's Head, Llandudno, North Wales. It appears to be a dissolution feature, probably enlarged during the Devensian.
No EXIF information is available
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Keywords:carboniferous, cymru, devensian, great orme, ice age, limestones, llandudno, meltwater, roberts, swallow hole, wales
