The Slovak Karst () is one of the mountain ranges of the Slovenské Rudohorie mountains in the Carpathians in southern Slovakia. It consists of a complex of huge karst plains and plateaus. Since 1973 it has been a protected landscape area. On 1 March 2002 Slovak Karst National Park was declared. It is also a UNESCO Biosphere Reserve and part of it forms UNESCO World Heritage Site Caves of Aggtelek Karst and Slovak Karst.
The highest peak is Jelenàvrch at 947 m AMSL. Important rivers are the Slaná (Sajó), the à  tÃÂtnik and the Turà Âa. The Slovak Karst lies in the north temperate zone and has a continental climate with four distinct seasons. The area is composed of several layers of Mesozoic limestone and dolomite, beneath which there is non-permeable sandstone, limestone and slate. The plains are covered by oak-hornbeam forests, the hills by oak forests and the karst pits by spruce forests. Beech forests are in the northern parts.
The plains (plateaus) have many karst formations, such as karst pits with diameters of up to 250 m and depths of about 45 m, conical hills, blind and half-blind valley and dales. The subterranean karst is known for its deep vertical abysses, such as:
Some of the abysses are collapsed, especially the Silická þadnica (Silica Ice Abyss; 110 m)
The region is best known for its many caves, out of which the Domica Cave, Ochtinská Aragonite Cave (Ochtinská aragonitová jaskyà Âa), Gombasek Cave (Gombasecká jaskyà Âa) and Jasovská Cave (Jasovská jaskyà Âa) are open to the public. Other noteworthy caves are Krásnohorská Cave (Krásnohorská jaskyà Âa) and Hruà ¡ovská Cave (Hruà ¡ovská jaskyà Âa).
The region also includes karst lakes. The largest lake is Jaà ¡teriÃÂie jazero (literally Lizard Lake), "Gyükerréti-tó" in Hungarian.
The Slovak Karst also features rare plants, for example:
and rare animals, for example:
Parts (from the west to the east):