 The fortress was later held by the Gorizia-Tyrol dynasty and in the 19th century received the name Maultasch Castle, after Countess Margaret whose residencies are however not substantiated.Under the reign of the Habsburg archdukes Frederick IV and Sigismund of Austria, it was the centre of an important lead (galena) and silver mining area, including several furnaces and loading stations on the Adige river.The emblem show an open gate with guelph merlon of argent on gules background.