What you need to know for a healthy and safe holiday in Slovenia

Jelševnik spring and the black olm

The black olm or the black proteus, the mysterious relative of the white olm, is endemic only to the underground world of Črnomelj. It has dwelt here for millions of years, even before the formation of karstic world. Its black body and red gills resembled the Krampus (parklji), and its scientific name Proteus anguinus parkelj reflects the fact. You can observe it in the explorable burbling whirlpool situated by the Jelševnik spring and accompanied by a visitor centre.

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