It was along this second route that Count Dirk built a stronghold at Vlaardingen, in a newly habitable area where many Frisians had recently settled by his invitation.
Pe parcursul acestei a doua rute, contele Dirk a construit o fortăreață la Vlaardingen, într-o regiune nou locuibilă, unde a invitat pe mulți frizoni să se statornicească.