Petlyuk locality is situated about 1 km south-east of the village of Gurgulyat and about 2.5 km south-west of the village of Gulubovtsi. Here, almost in line with east-west orientation, are situated three limestone cliffs - Petlyuchki kamik, Ravni kamik and Krivsha.
Through the rocks passes river of Petlyuk and forms beautiful gorge with a length of about 50m and height up to 30 meters. At one side of the gorge is the higher peak Petlyuchki kamik while at the other side are the lower and sloping Ravni kamik and Krivsha. On the south side of Petlyuchki kamik is situated the entrance to the cave named Galabarnika, which in its exit is called Haidushkata cave.
Near the three rocks were found traces of settlements dated to different ages and remnants of an ancient fortress.