Foiba

A foiba (from Italian: pronounced [ˈfɔiba]; plural: foibe ['fɔibe] or foibas)—jama (pronounced [ˈja̟mə]) in South Slavic languages scientific and colloquial vocabulary (borrowed since early research in the Western Balkan Dinaric Alpine karst)—is a type of deep natural sinkhole, doline, or sink, and is a collapsed portion of bedrock above a void.

They are chasms excavated by water erosion, have the shape of an inverted funnel, and can be up to 200 metres (660 ft) deep.

In karst areas, a sinkhole, sink, or doline is a closed depression draining underground.

The term "foiba" may also refer to a deep wide chasm of a river at the place where it goes underground.

[15] The Yugoslav partisans intended to kill whoever could oppose or compromise the future annexation of Italian territories: as a preventive purge of real, potential or presumed opponents of Tito communism[8] (Italian, Slovenian and Croatian anti-communists, collaborators and radical nationalists), the Yugoslav partisans exterminated the native anti-fascist autonomists — including the leadership of Italian anti-fascist partisan organizations and the leaders of Fiume's Autonomist Party, like Mario Blasich and Nevio Skull, who supported local independence from both Italy and Yugoslavia — for example in the city of Fiume, where at least 650 were killed after the entry of the Yugoslav units, without any due trial.