Postojnska jama (ext)
Postojnska jama (ext) /
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The entrance to the Postojna Cave (actual entrance centre-left of picture), in Slovenia's southwest. It is a 20,570m long karst cave system, one of the country's longest, created by the (now-underground) river Pivka.
FILE:
20130502si01.jpg
LOCATION:
Postojna
DATE:
Thu, 02/05/2013
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