Ignimbrites, Río Viejo, Nicaragua
© Žáček, Vladimír | 2006
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Esteli, Nicaragua
© Žáček, Vladimír | 2006
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Contact of phyllite and granite, Dipilto
© Žáček, Vladimír | 2005
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A smoothed block of greenschist, Nicarag
© Žáček, Vladimír | 2005
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Creased graphitic phyllite, Nicaragua
© Žáček, Vladimír | 2005
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