What is "tropolje"

Tropolje or Završje or Western Regions is a historical region in Bosnia and Herzegovina covering a part of the Dinaric Alps. It encompasses territory around karst fields of Livno, Duvno and Glamoč. The wider zone of this region also comprises the fields of Kupres and Bosansko Grahovo. Historically, the region is located on the border of Bosnia, Dalmatia and Herzegovina.