The Julian Alps have a limestone surface and underground. The surface has been glacially transformed by the action of glaciers. The Julian Alps are characterised by a mountainous climate with plenty of precipitation, especially snow. Rainwater in the form of rain, snow and ice dissolves limestone in the mountains under different conditions.
The High Karst is characterised by vertical caves - potholes that can be very deep. On the surface, the dissolution of the limestone bedrock results in the formation of sinkholes, kettles, grooves, gullies, scrapes, gullies and slats.
On such terrains, karst shapes are even more visible and pronounced. In the dry periods of the year, high mountain karst, although shaped by water, is essentially a desert without a drop of water, as it quickly seeps into the underground labyrinth through systems of cracks.
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