Zangilan District () is one of the 66 districts of Azerbaijan. It is located in the south-west of the country and belongs to the East Zangezur Economic Region. The district borders the districts of Qubadli, Jabrayil, the Syunik Province of Armenia and the East Azerbaijan Province of Iran. Its capital and largest city is Zangilan. As of 2020, the district had a nominal population of 45,200. Geography Zangilan city is located in the south-western part of Azerbaijan, in the northern part of the Aras River and borders upon Armenia and Iran. There exists a Mesozoic relief and cretaceous, volcanic and sedimentary rocks are spread in the territory of the district. Remains of the Jurassic and Cretaceous periods spread in mountainous territories are dated back to a period of 150-200 thousand years ago. There are Barbar and Salafir (2270 meters) summits in the territory and this mountain range passes Aras ravine near Aghbend, Vegnali. There is another mountain range in the direction of Sobu-Top-Dallakli villages, beginning from Shukurataz upland and it lowers near to Aras. The Susan Mountains between the Okhchu and Bargushad Rivers lower in the direction of south-east and make Aghgoyun flat land. This locality consists of sedimentary rocks of the Cretaceous periods. There are Karst caves on both coasts of the Okhchu River. Karabakh mountain ridge is located in the north-eastern part of the district. This ridge creates Goyan valley as it becomes lower. Forests spread in the mountainous territory of the district. Broad-leaved forests spread at the heights of 1800–2000 meters, gradually become lower and create subalpine and alpine meadows. The territory of the district is rich with healing plants and springs. There are also sources of construction materials, marble, clay, etc. in the district. Weather conditions of climate and complex relief created the uncommon climate. In a territory along the Aras River with semi-desert and dry steppes winter passes drily, and in higher territories, the climate is mildly warm. The territory is rich of minerals – molybdenum, gold, construction materials, limestone and others. The largest plane forest in Europe is also located in the district. History Zangilan district was famed under the name of Grakhmu castle located there in the medieval centuries. Only Achanan volost and the western part was included in the Kapan district of Armenia, but the eastern and more favourable territories were included in the Azerbaijan SSR while determining borders of the Soviet