From the category archives:

Karst and caves

Skocjan Caves in Slovenia (Slovene: Škocjanske jame; Italian: Grotte di San Canziano; German: Höhlen von St. Kanzian) is a structure of limestone caves in the Kras (Karst) area in southwestern Slovenia, comprising broke down dolines, nearly five kilometres of underground passages, caves more than 200 metres deep and many waterfalls. Skocjan Caves in Slovenia are [...]

Postojna caves | Slovenia’s World Attraction
The Karst is the name given to the landscape above the Bay of Trieste up to the Alps. The name karst (in slovenian language kras) is also used to describe phenomena which are typical of such uniquely rocky and hollow land. The karst topography is thus a stony, barren, parched [...]