SN8214 : Swallow (or Sink) Holes

taken 28 years ago, near to Aber-Craf, Powys, Great Britain

Swallow (or Sink) Holes
Swallow (or Sink) Holes
Indicative of limestone areas. The limestone is eroded by water and underground cave systems may form causing collapse at the surface (collapsed swallow holes). These swallow holes are as yet just depressions in the surface.
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SN8214, 15 images   (more nearby )
Photographer
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Date Taken
Wednesday, 20 September, 1989   (more nearby)
Submitted
Wednesday, 18 May, 2005
Category
Geological feature   (more nearby)
Subject Location
OSGB36: geotagged! SN 8270 1415 [10m precision]
WGS84: 51:48.8181N 3:42.1805W
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Image classification(about): Geograph
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