pseudokarst, speleological map, cave exploration, fauna, bats, Outer Western Carpathians, Czech Republic

The Cyrilka cave is the second longest pseudokarst cave and the longest crevice-type cave in Czechia. This cave developed within the headscarp area of a deep-seated landslide. The cave became a focus of scientific research throughout the last decades, when several speleological maps have been compiled. We compared the maps in order to better understand the gradual exploration as well as the speleogenetic evolution of the cave. In recent years, we performed the preliminary faunistic survey in the cave and found 11 invertebrates and 5 vertebrates. The locality is threatened by many visitors and contamination by littering. We recommend the protection of the cave as a national monument.