Yuncheng Salt Lake, the largest natural lake in North China’s Shanxi province, has changed to a bright red by Wednesday. Photo: VCG

The color of the lake changes as the higher temperature alters the chemical composition of the water and effects the algae living there. Photo: VCG

In Ancient China, Yuncheng Salt Lake was the source of a large share of the country’s salt. Photo: VCG

A species of algae that lives in the lake is partially responsible for the shifting colors. Photo: VCG

Known as “China’s Dead Sea,” the lake has become a hot destination for travelers. Photo: VCG