1. Institute of Geological Sciences, Jagiellonian University, Oleandry 2a, 30-063 Kraków, Poland
2. Institute of Geological Sciences, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland
3. Institute of Archaeology, Jagiellonian University, Gołębia 11, 31-007 Kraków, Poland
4. Administration of Slovak Caves, Hodžova 11, 031 01 Liptovský Mikuláš, Slovakia