We call it Mesudat Nahal Aqrav. The first word means “fortress” in Hebrew. Aqrav, as I shall call it here, is surrounded by a casemate wall, which is a wall formed by two parallel walls subdivided into rooms by transverse walls. The inner and outer casemate walls of the fortress are two feet wide and were constructed with rough-hewn blocks of local limestone. They are preserved to a height of over six feet. The entire casemate wall is approximately 130 feet in diameter and 406 feet in circumference, and is divided into 24 casemate rooms. The 8,712-square-foot central courtyard was open to the sky. The casemate rooms, however, were roofed and were used as lodgings, armories and storerooms. These rooms are each about eight feet wide, but they vary in length from about 10 to 25 feet. In three of these casemate rooms, we found stone columns in situ. That is why we know the casemate rooms were roofed. The columns once supported the roof, which had long since fallen in. In some of the doorways connecting the rooms with the courtyard, we found the lintels in situ.