Some 250 kilometers northeast of Kunming lies Dongchuan, a rural area with the world’s most imposing red earth. Spread over vast terraced fields, Dongchuan’s unusual brownish-red color comes from its rich deposit of iron and copper. Exposed to the warm and humid climate of Yunnan, the iron in the soil undergoes oxidization to form iron oxide which is naturally red in color. These oxides, deposited through many years, gradually developed into the extraordinary reddish brown soil seen here today. Every year during spring, when this area is ploughed for agriculture, a large number of visitors and photographers come to see squares of freshly upturned red earth waiting to be sown along with areas of budding green plants.