Wikipedia
Synevyr
Lake Synevyr ( Ukrainian: озеро Синевир) is the largest lake in the Carpathian Mountains of Ukraine. It is located in Mizhhiria Raion, Zakarpattia Oblast, not far from the village of Synevyr Poliana. It is part of the National natural preserve "Synevyr", which was established in 1989. Scientists estimate that the lake formed about ten thousand years ago. In 2008, the lake was recognized as one of the Seven Natural Wonders of Ukraine.