The Somogy Region is a 5750 km² large hill country limited with the Lake Balaton, the Sió Canal, the Kapos River, the Rinya Creek, the Drava River and the Principalis Canal. The region belongs to the number 4200 of the Official Hungarian Cave Registry. The surface is covered with Pannonian Sediment, Pleistocene loess and shifting sand.. The average height is186 m above the sea level, but some hills rise above 200 or 300 m above the sea.

In the Somogy Region natural caves are not known, but there are large number of cavities have been dug in the Pannonian sand and in the loess (cellars,  tunnels,  shelters). The dilapidated cavities  have  lost their original functions and they are slowly altering into consequence caves. The climatic conditions and the living creatures in the holes are similar to the natural caves. Recently the following five cavities have been studied:

             Betyár   Cave (SágvárVillage)  53 m,

             Barát Hole (Balatonendréd Village)  30,4 m,

             Bújó Hole (Ságvár Village)  22 m,

             Cave of the Kási Castle (Nyim Village)  8,4 m és

             Cavity of the Castle Hill  (Fonyód Town)  7,6 m.