State Nature Conservancy of the Slovak Republic Slovak Caves Administration
Štátna ochrana prírody

Okno Cave

The cave is known from time immemorial. It is situated on the right hand side of the Demänovská Valley in the Okno cliff at elevation of 915 m. The present length of cave spaces is 2,570 m with vertical span of 110 m.

The cave was first time described by M. Bel in 1723. New spaces were discovered by Prague scouts in 1921 and during surveys in 1923 - 1925.It is formed in the dark Middle Triassic limestones of the Krížna Nappe by erosion and corrosion of the Demänovka River.

The cave have quite rich flowstone fills, though partly damaged during surveys and by vandals. The cave has fluvial origin according to the character of spaces and occurrence of granite sediments. It represents the highest zone in the Demänovský Cave System. The temperature is between 5,8 –6,6°C and humidity has 88-96%.

The cave belongs among the oldest caves opened to tourists in Slovakia. The spaces were adapted by L. Povolný, as the owner of land, and during 1925 - 1926 he opened it to public. Archaeological findings from the younger Stone Age (Eneolith) were discovered in the cave.

Nine bat species were found in the cave. Regularly but only in less amount winter here the Greater Mouse-Eared Bat (Myotis myotis), Norhtern Bat (Eptesicus nilssonii) and Barbastelle (Barbastella barbastellus). The invertebrates include rare endemic form of troglophilic beetle Duvalius microphthalmus spelaeus, occurring only in the Demänovský karst. Palaeontological findings of fossile teeth of cave bear (Ursus spelaeus), brown bear (Ursus arctos) and remains of leopard (Panthera pardus) and lion (Panthera leo) were described from this cave.


Card payment - recommendation

Dear visitors, we would like to inform you that due to the technical conditions of payment terminals, there may be situations when card payment will not be possible. For this reason, we recommend that you have an adequate amount of cash available if you want to be sure that you will be able to visit the cave. Thank you for understanding.

Demänovská jaskyňa slobody - long tour reopened from 1st July 2024

Dear visitors,

after a longer period we reopen the long tour in the Demänovska Cave of Liberty from the 1st of July 2024. The tour is open once a day at 13:15 from June to August (3 months) and at 13:00 during the rest of the opening days. Number of visitors is limited, the tour is demanding, with many steps and it takes more than one and a half hours. Cave temperature is around 7°C whole year round. We are looking forward to your visit. 

15. vedecká konferencia: "Výskum, využívanie a ochrana jaskýň" / 15th scientific conference "Research, utilization and protection of caves"

Konanie: 24.- 26. september 2024. Bližšie informácie o tomto podujatí nájdete na odkaze.

The conference will be held from September 24 to 26, 2024 in Liptovský Mikuláš. More on the link.

Cave visit with small children

Dear visitors, due to increased visitation of parents with very small children (circa up to 3 - 4 years of age), we would like to kindly ask you to have a rucksack baby carrier with you for visiting the more demanding caves in given time. This recommendation concerns all caves but the most concerned are the following ones: Demänovská Cave of Liberty, Belianska Cave, Dobšinská Ice Cave, Demänovská Ice Cave, Harmanecká Cave. We also ask you to consider visiting the cave with your crying child, which could disturb the other visitors. Thank you for understanding and we wish you a nice experience.

Cave tour guides for download

Dear visitors, cave tour guides are available for download


Správa jeskyní České republikyInternational Year of Caves and KarstHabakukyZajo