Albania, once the most paranoid country in the world, is full of cement domes. Enver Hoxha, the leader of the country from 1945 to 1985, littered the small country with 500,000 - 700,000 bunkers and fortifications.
Military - Misc, Borders
Links: news.bbc.co.uk
By: Hinkkanen
http://noel.feld.cvut.cz/~horcik/albania/
Compare to the other map of bunkers that you submitted. The bunkers cast shadows and they're all distinct little domes.
What's in this map doesn't match the other bunkers at all.
*** And this map in particular I also wouldn't label (just my opinion) as a Land>Border since, even though the border is near, the "bunkers" do not make up part the border.