The fortification consists of a battery of artillery (the 605th Battery of the barge or battery) and two centers of resistance Infantry (35a and center center 35), which are found in rocky ridge between the balcony and the Castle of Martha. The complex extends over a length of about 550 m on a gradient of 135 m, inside there are two corridors formed by 118 and 207 steps, and a third about 90 steps.
June 17, 2007