mystical view of the rocky amphitheatre with a green pool and a white beam of water. 15-metre-high kozjak waterfall

15metrehigh alps amphitheatre beam beautiful cave cliff emerald environment erosion europe fall flow forest green high hiking hole journey julian kobarid kozjak landscape limestone mountain mystical national natural nature outdoor park pool river rock rocky scenic slap slovenia slovenian soca space stone stream tolmin travel trendy triglav turquoise view water waterfall white