
On the site of an old redoubt of the lines of the Lauter was built a telegraph station from 1795 to 1860, which was replaced by a pyramid of logs to carry out geodesic measurements in 1875 before being used as belvedere to admire the landscape . Replaced by a stone tower in 1895, it served as a watchtower during World War II before being destroyed by the Germans dynamite. It was never rebuilt. More info here.