The site was a strong fortification of considerable strategic importance. Later it was even equipped with cannon, for according to a 1437 document the number of guns was to be increased by 10 pieces in the event of war. According to this record, there were only attacks on the castle during the feud of the von Bartenslebens against Duke Otto of Lüneburg in 1464, whereby it was intended to be largely demolished (mehrentheils demoliret worden seyn).