valley Biebrza National Park during sunset, Poland Biebrza National Park during sunset, Poland Biebrza National Park during sunset, Poland Biebrza National Park during sunset, Poland Biebrza National Park during sunset, Poland Karuc village on Lake Skadar, Montenegro, the largest lake in the Balkan Peninsula. National Park. Djurdjevic bridge over Tara river in Montenegro. Djurdjevic bridge over Tara river in Montenegro. Djurdjevic bridge over Tara river in Montenegro. Black lake, Crno Jezero, with mountain views in Durmitor park, Montenegro. Black lake, Crno Jezero, with mountain views in Durmitor park, Montenegro. View on the Susica canyon covered by fog in northern Montenegro. View on the Susica canyon covered by fog in northern Montenegro. View on the Susica canyon covered by fog in northern Montenegro. View on the Susica canyon covered by fog in northern Montenegro. Durmitor national park in Montenegro, Balkans. Durmitor national park in Montenegro, Balkans. Durmitor national park in Montenegro, Balkans. Durmitor national park in Montenegro, Balkans. View on the Susica canyon covered by fog in northern Montenegro. View on the Susica canyon covered by fog in northern Montenegro.