During the Middle Ages vineyards were added on the slopes of the Jura Mountains above the lakes. In contrast, the plains and the Grosses Moos swamp were crossed by meandering rivers like the Aare and Thielle which frequently flooded making the land hostile to settlements. The villages on the edges of the swamp, used the swamp mainly for grazing.
During the Middle Ages, vineyards were established in the Jura Mountains above the lakes, while the plains and Grosses Moos swamp were characterized by rivers like the Aare and Thielle that frequently flooded, making them unsuitable for settlements. The villages near the swamp used it mainly for grazing.