Seeland (Drei-Seen-Land) or Pays des trois lacs is a region in Switzerland, at the foot of the first mountain range of the Jura Mountains containing the 3 lakes of Morat, Neuchâtel and Bienne (Biel). In previous eras, it was the floodplain of the Aare and is thus swampy. After the huge hydrological works Jura water correction, the area drained out and could support more cultivation. Seeland is one of the most important regions in Switzerland for growing vegetables, particularly in the Grand Marais (Grosses Moos).