The Little Carpathians (also: Lesser Carpathians, ; ; ) are a low, about 100 km long, mountain range, part of the Carpathian Mountains. The mountains are situated in Western Slovakia, covering the area from Bratislava to Nové Mesto nad Váhom, and northeastern Austria, where a very small part called Hundsheimer Berge (or Hainburger Berge) is located south of the Devín Gate. The Little Carpathians are bordered by Záhorie Lowland in the west and the Danubian Lowland in the east. In 1976, the Little Carpathians were declared a protected area under the name Little Carpathians Protected Landscape Area, covering . The area is rich in flora and fauna diversity and contains numerous castles, most notably the Bratislava Castle, and caves. Driny is the only cave open to the public. The three highest mountains are Záruby at , Vysoká at , and Vápenná at . Description Geomorphologically, the Little Carpathians belong into the Alps-Himalaya System, the Carpathian Mountains sub-system, its province Western Carpathians, and its subprovince the Inner Western Carpathians. The Little Carpathians are further divided into four parts (from south to north): Devín Carpathians (), Pezinok Carpathians (), Brezová Carpathians () and Čachtice Carpathians (). The mountains are densely forested (90% being broad-leaved trees), and the southeastern part contains extensive vineyards (e.g. Rača, Pezinok, Modra). Several castles or castle ruins are situated in the Little Carpathians, for example Devín, Čachtice, Červený Kameň, and Smolenice castles. Geologically, the mountain range is part of the Tatra-Fatra Belt of core mountains. There are several active faults, which have produced earthquakes. Of them the most notable is the Dobra Voda fault (1906 and 1930 produced 8.5° and 7.5° EMS-98 or equal to = 5.7 and 5.0). This particular fault is closely monitored because of its proximity to the NPP Jaslovske Bohunice (approx. 15 km away). The Little Carpathians are seismically one of the most active regions in Slovakia and epicentres of earthquakes with approximate magnitude of 2.5 on Richter magnitude scale are located here. There are a total of eight karst areas in the Little Carpathians: the Devín Carpathians, Borinka (Pajštún), Cajlan, Kuchyňa-orešany, Plavecký, Smolenice, Dobrovodský, and Čachtice karsts. The most important karst forms include caves Deravá, Tmavá skala, Driny, and Čachtická, and caves along the Borinský potok. Driny, a limestone cave, is the only cave open to public. Major streams include Vydrica and Suchý jarok. Highest peaks History While being a low mountain range,