glacial Biogradsko lake is a glacial lake in the intermountain valley of Bjelasica. Kolasin, Biogradska Gora national park. Montenegro, Europe Biogradsko lake is a glacial lake in the intermountain valley of Bjelasica. Kolasin, Biogradska Gora national park. Montenegro, Europe Biogradsko lake is a glacial lake in the intermountain valley of Bjelasica. Kolasin, Biogradska Gora national park. Montenegro, Europe