Vulkaanilise_tuha_kiht.JPG


Summary

Description
English: 454 million years old volcanic ash between the layes of limestone in the catacombs of Peter the Great's Naval Fortress in Estonia near Laagri. The diameter of objective cover is 58 mm.
Eesti: Paekivikihtide vahel paiknev 454 miljonit aastat vana vulkaaniline tuhk Peeter Suure Merekindluse maarinde Vana-Pääsküla positsiooni käikudes Laagri asumi lähedal. Pildil oleva objektiivi katiku läbimõõt on 58 mm.
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Author Ivo Kruusamägi
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29 August 2010