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Norber Erratic Boulders

The Norber Erratics are to be found near the village of Austwick in North Yorkshire. This fascinating collection of sandstone boulders of various shapes and sizes are scattered over an area of approx 1km.

Eroded from cliffs 1km to the north in Cummackdale during the last Ice Age, a southwards receding glacier transported the older Silurian greywacke rock and deposited it on top of an area of much younger carboniferous limestone bedrock.

Some of the larger erratic boulders have protected the softer limestone beneath them from the effects of weathering and acid soil-water erosion, leaving the displaced rocks standing on small limestone plinths or pedestals of up to 60cm in height.

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