Verlaatroute (purple)

The purple Verlaat Route runs through the dyke hamlet of Terdiek and past the church ruins to ’t Verlaat, the former lock of Niedorp (now Oude Niedorp). Until 1942, vessels passed through the lock here between the Westerlangereis, a medieval drainage canal, and the old Niedorpervaart, later deepened and widened to form the Alkmaar-Kolhorn Canal. The route is waymarked in both directions with purple arrows.