site.btaGathering Celebrates 95 Years of Caving Movement in Bulgaria
The Orlova Chuka Cave (BTA Photo/Biser Todorov)
Bulgaria has 6,200 documented caves which are in the catalogue of the country's Speleology Federation (BFS), and there is information about another 600 to 700 caves, BFS President Petar Delchev and Bulgarian Caving Society President Alexei Stoev
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