Generalka is a cave in Zagorje with a 25 metres (82 ft) horizontal passage length, located on the north slope of the Ivanščica massif, above the rock quarry Vudelja that opened in 1935 for road building purposes. It is a dry horizontal cave, and small, but complex. It is difficult to access, but a tourist path has been planned.
The cave is located on the Generalski Stol plateau of Ivanščica. The cave formed in Anisian dolomite under a combination of tectonic, erosive, and corrosive conditions. It is small, so at 6 points its passages remain incompletely explored because of narrowness alone. But its passages form a complex network of 4 interconnected passages. The cave likely continues to the northwest towards a second entrance.[4]
Speleothems include stalactites, stalagmites, and flowstone, along with the occasional stalagnate and coralloids.[5]
A map of the cave drawn in 2009 by Tomica Matišić.[3][6]
Cavers from the newly founded HSS [hr] section Kraševski Zviri discovered the cave on 7 November 2009. The cave had long been known to locals. A cache of spitzer bullets in the cave was found at the bottom of the entrance pit. They returned on the 14th and widened the very narrow entrance, removing the cache.[7] They then mapped the cave topographically. A microclimate expedition was undertaken on 15 April 2012, during which the cave was systematically photographed.[8]
A strong wind emanates from the lower entrance, indicating the presence of an upper entrance. The air temperature of the cave is 9.8 °C (49.6 °F), with a soil temperature of 9.7 °C (49.5 °F). The relative humidity is 98%.[9]
Fauna include Araneae and Gastropoda.[5]
A tourist path has been planned from Šumec to Bračkova jama and Bračkova špilja, and from there to Voska luknja and Voska špilja, then to Šumec and Karlova špilja, then to Generalka and Polušpilja Generalski Stol.[10][11]