Along the major thrust fault of the Variscan orogeny , there are over 30 thermal springs in Aachen and Burtscheid . Additionally , the subsurface of Aachen is traversed by numerous active faults that belong to the Rurgraben fault system , which has been responsible for numerous earthquakes in the past , including the 1756 Düren earthquake and the 1992 Roermond earthquake , which was the strongest earthquake ever recorded in the Netherlands
1992 Roermond earthquake
1992 Roermond earthquake
Aachen