Situated on the
western foothill of the Silicka Plateau in the Slovak
Karst, in the canyon of Slana river between Roznava and
Plesivec, in the Protected Landscape Area and Biospheric
Reserve of the Slovak Karst. It was formed in the Middle
Triassic limestones by the Cierny potok (Black Brook)
and its tributaries, at two developmental levels.
Overall length of the spring cave is 1,525 m. It excels
with its unique tiny sinter straw stalactites reaching
up to 3 m. The cave abounds also in other forms of
stalactites, stalagmites and various sinter onflows and
crusts. It was discovered in 1951 by
voluntary-spelunkers of Roznava, members of the Slovak
Speleological Association. The cave has been open to the
public since 1955, in the length of 285 m. Since 1968,
it was introduced for speleotherapeutical procedures
for 10 years, as the first of the caves in Slovakia.
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