Blausteinsee Fahrrad. Swimming, diving and many other types of water sports are possible in blausteinsee. Swimming, diving and many other types of water sports are possible in blausteinsee. Blausteinsee Eschweiler, Aachen RadtourenTipps from www.komoot.de Created by the replenishment of an open pit residual hole of the former lignite mine zukunft, the approximately 100 hectare blausteinsee […]