Mazandaran province is a Caspian province in the north of Iran. Located on the southern coast of the Caspian Sea, it is bordered clockwise by Russia (across the sea), Golestan, Semnan, Tehran, Alborz, Qazvin, and Gilan provinces. Sari is the largest city and the capital of Mazandaran province. The diverse nature of the province features plains, prairies, forests and rainforest stretching from the sandy beaches of the Caspian Sea to the rugged and snowcapped Alborz sierra, including Mount Damavand, one of the highest peaks and volcanos in Asia.

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. There is often snowfall in the Alborz regions, which run parallel to the Caspian Sea's southern coast, dividing the province into many isolated valleys. The province enjoys a moderate, subtropical climate. Although snow may fall heavily in the mountains in winter, it rarely falls at sea level. Given the climatic changes and varying rates of rainfall in different parts of Mazandaran province, this region has a variety of climates, including the mild and humid climate of Caspian shoreline and the moderate and cold climate of mountainous regions. The western and central plains of the province, up to the northern foothills of Alborz Mountain Range, experience the mild climate of the Caspian region. In the higher altitudes, there is a moderate mountainous climate, with long, cold winters, and short, mild summers. In this region, snow covers parts of the province even up to the middle of the warm season. In fact, snow can be observed in this region even in the warmest months of the year, which lends a touch of beauty to this region.