The Pivka is a karst lost river in Slovenia.

The river is 27 kilometres (17 mi) in length.

[1] The Pivka ends in Planina Cave, where it merges with the Rak River and then the Unica River.

[2] The Pivka created Postojna Cave, the longest cave system in Slovenia as well as one of its top tourism sites.

This article related to a river in Slovenia is a stub.