# Deep Seek Slovenia > An independent English-language guide to the caves and karst landscapes of Slovenia: twelve show caves (Postojna, Škocjan, Predjama, Križna jama and others), karst geology, the olm and other cave life, the history of exploration, and practical advice for visitors. Not affiliated with any cave operator, tourist board or technology company. Facts are rounded and reflect published figures as of 2026-10-06. Opening times and prices are not listed; check the official operator. ## Caves - [Show caves in Slovenia: all 12 compared](https://www.deepseek.si/caves/): Compare all twelve show caves in Slovenia by location, size, highlights and season, from Postojna and Škocjan to Križna jama and Snežna jama. - [Dimnice Cave: the smoking cave of the Karst edge](https://www.deepseek.si/caves/dimnice-cave/): Guide to Dimnice Cave near Markovščina, Slovenia: two shafts that 'smoke' in winter, six kilometres of passages and an underground stream. - [Kostanjevica Cave: dripstone under Gorjanci](https://www.deepseek.si/caves/kostanjevica-cave/): Guide to Kostanjevica Cave in south-east Slovenia, revealed by a flood in 1937: a 300-metre visitor route through dripstone halls, and a refuge for bats. - [Križna jama (Cross Cave): underground lakes by boat](https://www.deepseek.si/caves/krizna-jama/): Guide to Križna jama, the Cross Cave in Slovenia: a chain of emerald underground lakes crossed by boat, cave bear bones and strictly limited visits. - [Pekel Cave (Hell Cave) and its underground waterfall](https://www.deepseek.si/caves/pekel-cave/): Guide to Pekel Cave near Šempeter in the Savinja Valley, Slovenia: a stream cave on two levels with a four-metre underground waterfall. - [Pivka Cave and Black Cave: the wild side of Postojna](https://www.deepseek.si/caves/pivka-and-black-cave/): Guide to Pivka Cave and Black Cave near Postojna, Slovenia: a walk down a collapse doline to the underground Pivka river, on a quieter part of the Postojna system. - [Planina Cave: where two underground rivers meet](https://www.deepseek.si/caves/planina-cave/): Guide to Planina Cave (Planinska jama) in Slovenia, where the underground Pivka and Rak rivers meet to form the Unica. Tours by torchlight and by boat. - [Postojna Cave: what to see, the cave train and tips](https://www.deepseek.si/caves/postojna-cave/): Guide to Postojna Cave in Slovenia: the 24 km system, the underground railway, the Brilliant stalagmite, the olm vivarium and practical advice for visiting. - [Predjama Castle and the cave beneath it](https://www.deepseek.si/caves/predjama-castle/): Guide to Predjama Castle near Postojna, Slovenia: the castle built into a cave mouth, the legend of Erazem, and the 14 km cave system beneath it. - [Škocjan Caves: UNESCO underground canyon guide](https://www.deepseek.si/caves/skocjan-caves/): Guide to the Škocjan Caves in Slovenia, a UNESCO World Heritage Site: the Reka river's underground canyon, Cerkvenik Bridge, collapse dolines and visiting tips. - [Snežna jama: the ice cave on Mount Raduha](https://www.deepseek.si/caves/snezna-jama/): Guide to Snežna jama, Slovenia's highest show cave at about 1,500 m on Mount Raduha, with ice formations that survive all summer. - [Vilenica Cave: Europe's oldest show cave](https://www.deepseek.si/caves/vilenica-cave/): Guide to Vilenica Cave near Lokev on the Slovenian Karst, where paying visitors have been guided since 1633, and home of the Vilenica literary festival. - [Županova jama (Mayor's Cave) near Ljubljana](https://www.deepseek.si/caves/zupanova-jama/): Guide to Županova jama, the Mayor's Cave near Grosuplje, Slovenia: seven dripstone halls discovered in 1926, half an hour from Ljubljana. ## The karst - [The Slovenian karst: landscapes shaped by water](https://www.deepseek.si/karst/): An introduction to the karst of Slovenia: how caves form, the Classical Karst plateau, Lake Cerknica, Rakov Škocjan, Wild Lake and the deep Alpine caves. - [The Classical Karst: the plateau that named karst](https://www.deepseek.si/karst/classical-karst/): Guide to the Kras plateau in Slovenia, the original karst: its limestone landscape, bora wind, Teran wine, Štanjel, Lipica and caves. - [Slovenia's deepest caves: Kanin and Vrtoglavica](https://www.deepseek.si/karst/deep-caves/): The deepest and longest caves in Slovenia: Čehi 2, Renejevo brezno, the 603 m shaft of Vrtoglavica on Mount Kanin and the 40 km Migovec system. - [How caves form: karst geology explained simply](https://www.deepseek.si/karst/how-caves-form/): A plain-language explanation of how limestone caves, stalactites, dolines and poljes form, with examples from the karst of Slovenia. - [Lake Cerknica: Slovenia's disappearing lake explained](https://www.deepseek.si/karst/lake-cerknica/): Why Lake Cerknica in Slovenia fills and vanishes each year, how the intermittent karst lake works, its history, birdlife and when to visit. - [Rakov Škocjan: natural bridges and a sinking stream](https://www.deepseek.si/karst/rakov-skocjan/): Guide to Rakov Škocjan landscape park in Slovenia: the Little and Great Natural Bridges, Zelške jame, Tkalca jama and the walking trail through the valley. - [Wild Lake (Divje jezero) near Idrija: a karst spring](https://www.deepseek.si/karst/wild-lake/): Guide to Wild Lake (Divje jezero) near Idrija, Slovenia: a deep karst spring over a flooded cave, source of the country's shortest river. ## Discover - [Cave life, history and archaeology in Slovenia](https://www.deepseek.si/discover/): Stories from Slovenia's caves: the olm, cave-adapted animals, three centuries of exploration and the archaeology of Divje Babe and Potočka zijalka. - [Caves and early humans: the Divje Babe flute](https://www.deepseek.si/discover/archaeology/): Archaeology of Slovenian caves: the debated Neanderthal flute from Divje Babe, Ice Age hunters at Potočka zijalka and Bronze Age offerings at Škocjan. - [Cave animals of Slovenia: life in permanent darkness](https://www.deepseek.si/discover/cave-life/): The cave fauna of Slovenia: the first cave beetle Leptodirus, blind shrimps, the cave tube worm, hibernating bats and the extinct cave bear. - [History of cave exploration in Slovenia: a timeline](https://www.deepseek.si/discover/exploration-history/): A timeline of cave exploration in Slovenia, from 13th-century signatures in Postojna Cave and Valvasor to Luka Čeč, Schmidl, Martel and the deep caves of Kanin. - [The olm (Proteus anguinus): Slovenia's 'human fish'](https://www.deepseek.si/discover/olm/): Facts about the olm, Proteus anguinus: the blind cave salamander of Slovenia that lives up to 100 years, how it survives, the black olm and where to see one. ## Plan - [Visiting caves in Slovenia: a practical guide](https://www.deepseek.si/plan/): Practical advice for visiting caves in Slovenia: best season, cave temperatures, what to wear, tickets, transport from Ljubljana, accessibility and children. - [Caving in Slovenia: safety, clubs, rules and rescue](https://www.deepseek.si/plan/caving-safely/): How to go caving safely and legally in Slovenia: risks of wild caves, essential rules, the Cave Protection Act, caving clubs, adventure tours and cave rescue. - [Slovenia caves FAQ: tickets, temperature, tips](https://www.deepseek.si/plan/faq/): Answers to common questions about visiting caves in Slovenia: Postojna or Škocjan, cave temperature, booking, children, transport, photography and winter opening. - [Slovenia cave itineraries: 1, 3 and 5 day routes](https://www.deepseek.si/plan/itineraries/): Ready-made itineraries for visiting caves in Slovenia in one, three or five days, with timings, driving distances and what to combine with Postojna and Škocjan. ## Reference - [About Deep Seek Slovenia](https://www.deepseek.si/about/): Deep Seek Slovenia is an independent guide to the caves and karst of Slovenia: who publishes it, how it is written and where the images come from. - [Cave and karst glossary: doline, polje, ponor](https://www.deepseek.si/glossary/): A plain-English glossary of cave and karst terms, from doline, polje and ponor to speleothem, troglobite and sump, with Slovene words explained. - [Photo and video credits](https://www.deepseek.si/photo-credits/): Authors, licences and sources for every photograph and video used on Deep Seek Slovenia. All media are from Wikimedia Commons under free licences. - [Privacy and cookies](https://www.deepseek.si/privacy/): How Deep Seek Slovenia handles privacy: no accounts or ads, optional Google Analytics only with consent, Google Fonts and server logs. ## Optional - [Full text of all pages](https://www.deepseek.si/llms-full.txt) - [Sitemap](https://www.deepseek.si/sitemap.xml)