The counterguard, hornwork and ravelin were surrounded by a secondary fosse leading into the main fosse and a covered way fitted with a parapet, parade squares and traverses. | Contraguardia, hornabeque y revellín estaban rodeados por un foso secundario que desembocaba en el foso principal y de un camino cubierto dotado de parapeto, plazas de armas y traveses. |
