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CASOLA2018 INCONTRO INTERNAZIONALE DI SPELEOLOGIA | 1-4 NOVEMBRE | CASOLA VALSENIO | RA | ITALY

CASOLA2018 INCONTRO INTERNAZIONALE DI SPELEOLOGIA
1-4 NOVEMBRE | CASOLA VALSENIO | RA | ITALY

CASOLA2018 INCONTRO INTERNAZIONALE DI SPELEOLOGIA
1-4 NOVEMBRE | CASOLA VALSENIO | RA | ITALY

Caves and Speleology in Bulgaria

Brief information for caves and speleology in Bulgaria - karst areas and the longest and depest caves in the country, Bulgarian caving associations and their activities in the country and abroad with the focus of the activity of Bulgarian Caving Sociaty,

Authors: Alexey Zhalov - Bulgarian Caving Society - president of Balkan Speleological Union