The fourth episode in the series is dedicated to the Main. The river, which flows across Germany from east to west for more than 500 kilometers, is a reflection of German nature: tamed and yet unruly. Nowhere else can you see the power of life and the power of nature better. The Main is affectionately called the white sausage equator. In fact, it winds its way through Germany in many twists and turns over 542 kilometers from east to west. From the Fichtelgebirge to Mainz. It is the second longest river that flows along its entire length in Germany. At the same time, the Main is one of the most misunderstood rivers in the country. Because which images do you associate with the Main? The skyline of Frankfurt? The vineyards around Würzburg? The general image of the Main is shaped by the economic miracle after the Second World War. Back then progress meant everything, nature nothing. As a result, the Main looked more like a cesspool than a river in the 1960s and 1970s.