Lake Constance is the main hub for migratory birds in Western Europe. Lake Constance is so large that, standing on one shore, the Earth’s curvature prevents you seeing the opposite bank. This body of water is large enough to influence the region's climate, and the soil round about is so fertile it creates its own ecosystem. This film explores the secrets above and below the waterline and on the shores of this lake linking Austria, Germany and Switzerland, with no borders in between.
