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The glaciated trough of the Gasterntal, looking up-valley from the Stock hill; the 1908 tunnel breakthrough created a valley-floor sinkhole in the woodland.

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Presentation on theme: "The glaciated trough of the Gasterntal, looking up-valley from the Stock hill; the 1908 tunnel breakthrough created a valley-floor sinkhole in the woodland."— Presentation transcript:

1 The glaciated trough of the Gasterntal, looking up-valley from the Stock hill; the 1908 tunnel breakthrough created a valley-floor sinkhole in the woodland just beyond the furthest of the large open meadows (© Tony Waltham Geophotos Ltd). The glaciated trough of the Gasterntal, looking up-valley from the Stock hill; the 1908 tunnel breakthrough created a valley-floor sinkhole in the woodland just beyond the furthest of the large open meadows (© Tony Waltham Geophotos Ltd). C. J. Martin et al. Geological Society, London, Engineering Geology Special Publications 2017;28:1-30 © 2017 The Author(s). Published by The Geological Society of London


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