The Krnica Valley represents one of the side glacial valleys of the Upper Sava Valley. The purpose of this research was to investigate the traces of glaciation in the valley. In the whole studied area between the Kriška wall and the mountain in the Klin area, five areas of the moraine ridges were identified, which, despite intense erosion and acummulation of geomorphic processes, are especially well preserved in the upper part of the Krnica Valley. For the younger three glacial stages in the area between the Kriška wall and the Krnica mountain hut, a reconstruction of the surface and the extent of paleo-glaciers with their associated equilibrium line altitudes was made. In the area between the youngest moraine ridge and the Kriška wall, two profiles were taken in 2015 with a georadar, the aim of which was to verify the possible existence of relict ice under the layer of firn and gravel. For the Krnica Valley area, equilibrium line altitudes (ELAs) were estimated at much lower altitudes compared to the other similar areas in the vicinity. For the first glacial stage, which most probably belongs to the period of the Little Ice Age, the ELA is estimated at 2010 m above sea level, which is 426 m lower than the ELA of the Triglav Glacier for the same period, 4.5 km away. The second and third glacial stages in the Krnica Valley probably belong to the Early Holocene and Younger Dryas periods, respectively, and their equilibrium line altitudes were estimated at 1954 m and 1727 m above sea level, respectively. The moraine ridges, lying to the north of the Krnica mountain hut, probably date to the later Pleistocene cooler periods, i.e. Last Glacial Maximum (LGM) with a peak of 21,000 years ago.
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