Pivka River

Pivka
Pivka River
Country	Slovenia
Basin features
Main source	Zagorje, Pivka 555 m (1,821 ft) 45°38′20.89″N 45°38′20.89″E / 45.6391361°N 45.6391361°E / 45.6391361; 45.6391361
River mouth	Flows to Postojna Cave 510 m (1,670 ft) 45°47′0.43″N 14°12′10.09″E / 45.7834528°N 14.2028028°E / 45.7834528; 14.2028028Coordinates: 45°47′0.43″N 14°12′10.09″E / 45.7834528°N 14.2028028°E / 45.7834528; 14.2028028
Physical characteristics
Length	27 kilometres (17 mi)

The Pivka is a karst lost river in Slovenia. The river is 27 kilometres (17 mi) in length. The Pivka ends in Planina Cave, where it merges with the Rak River and then the Unica River. The confluence of the Pivka and the Rak is one of the largest subterranean confluence in Europe. The Pivka created Postojna Cave, the longest cave system in Slovenia as well as one of its top tourism sites.

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