Pictured is a canal with locks near the Grote Dam in Graft-De Rijp, The Netherlands. De Rijp is a village and former island in the Dutch province of North Holland. It is a part of the municipality of Alkmaar. Before the poldering of the lakes surrounding it, De Rijp was famous for its herring industry. De Rijp was a separate municipality until 1970, when it merged with Graft. The population is around 4,020.