Mountain forests of Gakh region are located in the southern side of the Greater Caucasus in west of Azerbaijan. There are forests territories from 350 to 2000 meters above sea level on the mountains. Caucasian Hornbeam (Carpinus caucasica) Georgian Oak (Quercus iberica) are dominant trees on the dry and warm areas of the mountains. Oriental Hornbeam (Carpinus orientalis) and Oriental Beech (Fagus orientalis) are widespread on the dry lands of the mountains. The timberline includes Trautvetter's Maple (Acer trautvetteri) and Persian Oak (Quercus macranthera). In the mountain forests of Gakh, there can be found Tree Hazel (Corylus iberica), which is an endemic species, and only specific to the western territories of the country.