Krka Cave, Cave and archaeological site in Ivancna Gorica, Slovenia

Krka Cave is a horizontal karst formation near Ivancna Gorica that stretches roughly 210 meters and reaches about 30 meters in width. Inside, a central channel flows and becomes active during heavy rainfall, directing water from the surface.

Neolithic Lengyel ceramics found in 1956 show the cave was frequented in that period. Locals hid in it during the Ottoman invasions of the 15th and 16th centuries, a setting used in Josip Jurčič's 1864 story Jurij Kozjak. Valvasor recorded his visit in the 17th century, Jan Vladimír Hráský made the first survey in 1887, and since 1927 the cave has been listed in the Slovenian cave cadastre as number 74.

The cave's Slovene name, Krška jama, links it to the Krka River, whose occasional spring lies just below the main entrance. Josip Jurčič, born nearby, set his 1864 story Jurij Kozjak partly in the cave, describing locals hiding there from Ottoman raids. Since the 2000s it has hosted concerts, including the choir singers at Christmas, Siddharta in 2008 and Zlatan Stipišić Gibonni in 2010.

Access to the cave involves stone stairs leading up from a lake at the Krka River source area. All visitors must join a guided tour to explore the cave and ensure safety and proper site protection.

The cave houses numerous animal species, including a rare endemic crustacean found only within this underground system. This creature is so specialized for cave conditions that it exists nowhere else in the world.