Bagi, thanks for the description. This weekend I walked the first of the paths.
First warnings:
1. The path from the viewpoint above Koglje to Koča Premuda has quite a mountainous character, is exposed and, due to scree, dangerous for slipping. Caution is not superfluous, especially for lower mountain hikers who are not used to high mountain paths.
2. GPS app (Orux for me), not only welcome, but mandatory. Without it I would have got lost back to Slovenia already at Botač or gone on the otherwise nice panoramic path directly to Premuda (also closed for me around eleven, still closed), but missed the viewpoint above Koglje, which is definitely worth visiting.
Not to mention the labyrinth of paths and trails from Hrvati to and across Bazovica, all the way to the monument to the Bazovica victims. Further to Kokoš there are blue-white 'knafelj' markings.
Part of the path from Hrvati to Nemogoča jama runs above the climbing area and Via ferrata Bruno Biondi (was there about 5 years ago)
Except in the morning when it was about 2 to 3 below zero (a year and a day after Bagi's visit

), no special frost for me, no bora either. But in the morning, on the bike trail of the former line, it was already full of Italian cyclists even now. I rode this trail myself about 15 years ago (Kozina - Trieste - Opčine tram (still running then) - Orlek - Lipica - Bazovica - Kozina)
From the description of Nemogoča jama I learned that a commission was 'purposefully' established to explore it
