"Vražji vrtec" can be translated to English as "Devil's garden". I couldn't find the etymology of the name but the area doesn't look infernal at all. Anyway, this is a rather interesting hilltop just above Croatian and Slovenian border. An easy hike starts at Prezid and leads directly to a rocky opening where the remains of a pre-WW2 bunker still exist. This opening is marked as Checkpoint No. 20 of GPP - it is the northernmost Checkpoint of this trail. There is nice view of Prezid and surrounding Croatian and Slovenian mountains from here. A barely visible trail goes some 200 meters further to another small clearing - the peak Vražji vrtec itself, 904 m.a.s.l. Somewhere near the peak, there should be the remains of the antique Roman wall called "Clausura Alpium Iuliarium" or "Liburnian Limes" which I couldn't find or recognize this time. So all in all, quite a destination to hike and explore.