Vecht, Aa and Zwarte Water. The hill was the only piece of land that would remain dry during the frequent floodings of the rivers. Zwolle was established on that incline.

A document mentions the existence of a parish church dedicated to St Michael. That church, the Grote of Sint Michaëlskerk (St. Michael's church), was renovated in the first half of the 15th century and exists to this day. The church