ABSTRACT
The investigations covered by this survey have not otherwise involved any noteworthy change in ideas about the character of the city wall. Though it displays minor variations in structural features from one place to the next such variations are normal to Roman defensive works, in which gangs building separately, and without close co-ordination of their individual efforts, did not always build to the same pattern. A fragment of wall seen and partly preserved beneath the new London Wall (Route 1 1) (23) is identical in general character with lengths exposed on the eastern side of the city at the Tower of London. Here also there was the internal bank, standing no more than 3 feet high, and-as with the fort bank-reflecting in its slightness the small size of the contemporary ditch. The latter was slightly bigger than the fort ditch, but even so was only 14 feet wide by 5 feet deep, with a weak U-shaped profile-a token, rather than a true defensive feature. A build-up of gravel layers behind the bank suggested an internal road; but because of modern destruction not enough had survived to establish its complete character (Fig. 20 below).
