Ajdna is a peak in the Karawanks in the Municipality of Žirovnica in the Upper Carniola region of Slovenia. Access to it is easiest from the village of Potoki in the neighbouring Municipality of Jesenice.
A settlement from late Antiquity has been found just below the summit and evidence shows that it was probably inhabited much earlier. Excavations began in 1976. Most evidence is from the period immediately after the collapse of the Roman Empire, when it seems locals moved to the safety of the peak from the valley below during a period of upheaval and migration of various Germanic and Slavic tribes through the region.
Wikipedia https://en.wikipedia.org/wiki/Ajdna
Address 4274, Slovenia
Coordinates 46°25'16.03" N 14°7'49.123" E