The cave is located between villages Brestovica pri Komnu and Vojščica on the hill Grmada and has three names. In village Brestovica pri Komnu it is called Brstovci, in village Sela na Krasu Trščica and in Vojščica they call it Greščica. It is about 20 meters deep. Its characteristic is, that it has one of the biggest diameters, about 8 meters. Abyss has a cone in the middle, which was caused by the demolition of the ceiling.

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Grmada on Karst
Grmada (it. Monte Ermada) is a 323 meters high elevation in Trieste Karst. In the south, it rises between Devin and Sesljan, and in the north if flows into Brestoviški dol. The elevation was very important during the WWI, as the Austro-Hungarian defense line run through the elevation. [_Read more_]

Vojščica
Vojščica is typical Karst village with some preserved Karst homesteads and wells. It is located southeast from Kostanjevica, in municipality Miren-Kostanjevica, in vicinity of Slovenia-Italian state border. In the middle of the village is church St. Vid, which was erected between years 1924 and 1928. [_Read more_]