The shortest of the two is in the south and joins the low wall on its eastern end, where a gate was; the longest higher wall runs from the western end (at a bastion) almost to the northern tip of the massif. There may have been a postern, in about the middle of the western wall. The higher walls are up to 1.5 m (4 ft 11 in) thick, and between 1.5–2 m (4 ft 11 in–6 ft 7 in) high.