Kournas Lake is the only physical freshwater lake in Crete. It is relatively large, with a perimeter of 3.5 km. According to a legend, it has no bottom, which is not true and was based on its dark color. There are also theories about strange electromagnetic fields near the lake, making some people uneasy while others feel a very good energy. Its unique beauty preserves until today the legend about the nymph who lives into the lake of Kournas. Lake Kournas is an important wetland area with a variety of flora and fauna, and so it is included in the Natura 2000 protection program.