The paper analyses the structure of the upper hydrogeological basin of the Krka River. Located in the north-western foothills of the Dolenjska karst it consists of a mosaic of endorheic hydrographic basins characterized by peculiar fluviokarst forms of undoubted morphological interest. Attention is focused on the paradigmatic case represented by Radensko polje, now valorized in the frame of one of the landscape parks of Slovenia.
