<P> Many karst - related terms derive from South Slavic languages, entering scientific vocabulary through early research in the Western Balkan Dinaric Alpine karst . </P> <Ul> <Li> Abîme, a vertical shaft in karst that may be very deep and usually opens into a network of subterranean passages </Li> <Li> Cenote, a deep sinkhole, characteristic of Mexico, resulting from collapse of limestone bedrock that exposes groundwater underneath </Li> <Li> Foibe, an inverted funnel - shaped sinkhole </Li> <Li> Scowle, porous irregular karstic landscape in a region of England </Li> <Li> Turlough (turlach), a type of disappearing lake characteristic of Irish karst </Li> <Li> Uvala, a collection of multiple smaller individual sinkholes that coalesce into a compound sinkhole . Word derives from South Slavic languages . </Li> <Li> Karren, bands of bare limestone forming a surface </Li> <Li> Limestone pavement, a landform consisting of a flat, incised surface of exposed limestone that resembles an artificial pavement </Li> <Li> Polje (karst polje, karst field), a large flat specifically karstic plain . The name "polje" derives from South Slavic languages . </Li> <Li> Doline, also sink or sinkhole, is a closed depression draining underground in karst areas . The name "doline" comes from dolina, meaning "valley", and derives from South Slavic languages . </Li> <Li> Karst spring, a spring emerging from karst, originating a flow of water on the surface </Li> <Li> Ponor, also sink or sinkhole, where surface flow enters an underground system . Derived from Slovenian </Li> <Li> Sinking river, or ponornica in South Slavic languages </Li> <Li> Karst fenster ("karst window"), a feature where a spring emerges briefly, with the water discharge then abruptly disappearing into a nearby sinkhole </Li> </Ul> <Li> Abîme, a vertical shaft in karst that may be very deep and usually opens into a network of subterranean passages </Li> <Li> Cenote, a deep sinkhole, characteristic of Mexico, resulting from collapse of limestone bedrock that exposes groundwater underneath </Li>

What reaction that occur with water help create features of karst topography