The region is mostly at a low altitude along the base of the mountains, particularly in a 20 km wide strip of cultivated land that reaches 300 km east to the capital city of Ashgabat. The Caspian lowland desert ecoregion occupies a 20 km wide strip of land between the Kopet Dag semi-desert and the Caspian Sea. To the north is another desert, the Central Asian southern desert. To the south are the Kopet Dag woodlands and forest steppe ecoregion, and the Caspian Hyrcanian mixed forests ecoregion. The ecoregion is about 350 km from west to east, and 200 km from North to south.