But it could hardly have deterred any reasonably spirited and well-organised enemies who were keen to scale it, especially as much of it was built only of turf, unlike the solid stone sections that star in most photographs. Without a walkway along the top, it was not even well designed for surveillance and patrol purposes. But as a customs barrier, which is one recent suggestion, or as an attempt to control the movement of people more generally it seems a more hefty construction than was necessary.
