More than 375 years ago, a big storm surge in the German Bight of the North Sea destroyed farmland, farms, and villages, and killed a great number of both cattle and men. The big (second) “Mandränke” of 1634 is still one of the most famous storm surges in the area of the North Frisian Wadden Sea. We present first results of our analyses of spaceborne SAR data, which show imprints of former settlements in the area, which was destroyed by the “Mandränke”. For the first time, data from the high-resolution TerraSAR-X are used to demonstrate that residuals of former agricultural areas can still be detected from space. The data are complemented by aerial photographs and in-situ data.