The Maalbeek has its source in Relegem, a municipality of Asse, and after 12.6 km flows into the Brussels-Rupel Canal at the 'Verbrande Brug' of Grimbergen. It originates from seepage water, groundwater that comes to the surface under pressure. Via the 'Sprietmolen', it runs along the 'Nekkerbos' to Grimbergen, where there are four more mills. The ‘s Gravenmolen, the Liermolen, the Tommenmolen and the Oyenbrugmolen.

The ostinate represents the origin of the well. Small streams of water gather...