Priest's Grotto
Coordinates: 48°46′21″N 25°59′30″E / 48.77250°N 25.99167°E Priest's Grotto (also known as Ozerna or Blue Lakes Ukrainian: Озерна, meaning: "lake") is a cave in western Ukraine near the village of Strilkivtsi (Ukrainian: стрілківці), located within the Borshchiv Raion (District) of the Ternopil Oblast (Province).
Priest's Grotto is part of the extensive gypsum giant cave system, and is one of the longest caves in the world with over 127779 m of explored passages. It is about 450 kilometers (280 mi) driving distance southwest of Kiev, and about 5.5 kilometers (3.4 mi) south of the district seat of Borshchiv. In World War II it was used as a refuge by Jewish refugees from the Nazi occupation during the Holocaust.
In 1942–1944, during the Nazi occupation, several Jewish families lived in this and the nearby Verteba Cave (located 8 kilometers, or 5 miles, to the west in the town of Bilche Zolote). Some of these people never left the cave for 344 days, making this the longest recorded instance of uninterrupted cave habitation known. Although some of the Jews hiding in these caves were caught and exterminated by the Nazis, thirty-eight of them managed to survive the Holocaust of Ukrainian Jews until the area was liberated by the Red Army in April 1944.
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