Sven Zacek / Bog surrounding river in morning light. Emajoe Suursoo Nature Reserve, Tartumaa, Estonia. October 2015.
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Sven Zacek / Kalli River flowing through swamp and swamp forest to Kalli Lake and Lake Peipsi / Peipus in distance, aerial view. Emajoe Suursoo Nature Reserve, Tartumaa, Estonia. October 2018.
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Sven Zacek / Frozen and snow covered Kalli River and Kalli Lake with Lake Peipsi / Peipus in background. Emajoe Suursoo Nature Reserve, Tartumaa, Southern Estonia. November 2018.
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Sven Zacek / Sunrise over river and forest in Emajoe Suursoo Nature Reserve, aerial view. Tartumaa, Eastern Estonia. May 2016.
