
1) lake in Croatia
Found on
https://www.crosswordclues.com/clue/petnja

Petnja Lake is an artificial lake located 3.5 km from the municipality of Sibinj (Završje) and 7 km north-west of the city of Slavonski Brod, Croatia. The lake is surrounded by an ancient Slavonian forest and is called `The eye of Dilj`. There are also 3 caves in the area and numerous water sources. ...
Found on
http://en.wikipedia.org/wiki/Petnja
No exact match found.