In the 19th century sandstone was quarried in the Süllberg. Even today, numerous sandstone quarries bear witness to the former industry, especially on the western side. In the Second World War there was an anti-aircrate site on the top of the ridge; today a large number of bomb craters and the concrete foundations remain as evidence. In the north, towards Lüdersen, there is a Cold War bunker. This has now been given by the Federal Property Management Agency to a private investor who specialises in the area of archiving and document storage as a backup.