In June 8th-12th 1998, an annual student cryptogamological excursion – organised by the Department of Botany, Charles University, Prague – took place in the area of the Slovenský raj National park (Eastern Slovakia). Results of an informative lichenological exploration in its northern part are summarized. Altogether 159 taxa were identified, of which four species (Anema notarisii, Clauzadea metzleri, Mycobilimbia carneoalbida and Vezdaea stipitata) are reported from Slovakia for the first time.