Giant's Causeway (IV)
Giant's Causeway (IV) /
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The columns of the Causeway were formed over 30 million years ago by sustained volcanic activity in the area, after which contracting lava (as it rapidly cooled) formed an extensive fracture network, producing the distinctive columns seen today.
FILE:
20090521ix20.jpg
LOCATION:
Giant's Causeway
DATE:
Thu, 21/05/2009
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