Corrugated patterns on the sandstone surface at Tarpeian Rock are called Liesegang Rings. The pattern is the result of differential weathering between hard and soft layers. [5794]
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![Corrugated patterns on the sandstone surface at Tarpeian Rock called Liesegang Rings.[5794]](aussiePlaces/leuraNSW/fulls/walk/08-_F3A5794.jpg "Liesegang Rings")