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Srebarna - Bulgaria |
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Tatra National Park - Slovakia |
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Black Sea - Bulgaria |
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Polana Biosphere Reserve (Hukavsky grun) - Slovakia |
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Kralova hola - Slovakia |
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Poloniny National Park LTSER - Slovakia |
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Trnava LTSER - Slovakia |
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Pfynwald - Switzerland |
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Mesta River - Bulgaria |
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Jalovecka dolina - Slovakia |
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Kremnicke vrchy Ecological Experimental Station - Slovakia |
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Petrohan-Ponor - Bulgaria |
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Vordemwald - Switzerland |
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Sozopol - Black Sea - Bulgaria |
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Tatras - alpine summits - Slovakia |
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Bab - Slovakia |
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Belasitsa - Bulgaria |
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Davos Seehornwald - Switzerland |
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Novaggio - Switzerland |
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Visp - Switzerland |
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