The flow chart illustrates the formation of a rain shadow desert.
Overall, the process can be divided into two main stages, starting with moist air bing forced to rise over a mountain and finishing with the development of dry desert conditions on the leeward side. It is a naturally process driven entirely by climatic factors, without any human encouragement.
Initially, moist winds travel towards a coastal mountain range. As the air encounters the mountain, it is forced to rise. During this upward movement the air cools and condences, forming clouds. This leads to rain falls on the windward side of the mountain.
After crossing the peak, the now-dry air descends on the opposite side. As it moves downward, it becomes warmer and continues inland. The lack of moisture in this descending air results in arid conditions, eventually leading to the formation of a rain-shadow desert
