Hull notes, 'In September 1957 I discovered that the demolition of a large building on the N side of Vineyard Street had exposed the face of the Town Wall. The site had been levelled and gravelled to make a car park. Just off this gravelling, at the NW corner of the area, an opening in the wall was apparent. Almost as low as ground level a Roman drain about 2ft wide and high, plus the height of the brick arch spanning it, debouched from the wall. It had been covered , or partly covered by modern patchwork of brick, which was now broken, revealing the Roman work. Within lay a mass of broken bricks, mortar and dust. The underside of the arch could be seen to run back a good distance.' The arch was 123m (370ft) east from the centre line of Sheregate steps. The drain was cleared for 9ft revealing a heap of septaria, the arch continued at least another 6ft.<1>