The Hajla lies like a long ridge between Montenegro and Kosovo, or rather, it stands like an upright plate/vertical disc, quite steep on one side (south), and dropping 400m almost vertically on the other (north). At the top, a ridge of white limestone rock, sometimes only about 2m wide, over which you climb/walk.
Surefootedness! A head for heights!
The entire ridge is made of limestone and volcanic rock.