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Balancing Norber erratic

On the hillside near Austwick there is a large collection of glacial erratics consisting of Silurian slate boulders that were brought here by the last Ice age ~15,000 years ago. These erratic boulders are about 400 million years ago, whilst the younger limestone they rest on is only about 300 million years old.

Many of these erratics stand upon little limestone pedestals. Over many years the boulders have protected the limestone beneath from the weathering, but the other surrounding limestone has been worn away.

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Photo details

  • Uploaded on February 23, 2013
  • © All Rights Reserved
    by Wadders
    • Camera: NIKON CORPORATION NIKON D600
    • Taken on 2013/02/17 07:35:28
    • Exposure: 0.002s (1/500)
    • Focal Length: 35.00mm
    • F/Stop: f/7.100
    • ISO Speed: ISO160
    • Exposure Bias: -0.67 EV
    • No flash