Mazandaran province is geographically divided into two parts: the coastal plains, and the mountainous areas. The Alborz Mountain Range surrounds the coastal strip and plains of the Caspian Sea. The Alborz Mountain Range like a huge wall has surrounded the coastal strip and plains of the Caspian Sea. Due to permanent sea breeze and local winds of the southern and eastern coasts of the Caspian Sea, sandy hills are formed, causing the appearance of a low natural barrier between the sea and plain.