Below are pictures of the wall of Magdalen College Grove on the east side of the street (which some people wrongly assume is the city wall.
This wall was restored in the nineteenth century. Jackson's Oxford Journal of 17 October 1891 reported:
MAGDALEN COLLEGE
The restoration of the grove wall in Holywell-street, which was commenced in 1890, was completed early this year. The whole of the stone ashler and moulded string course is of Milton stone, and now it is weathered and toned down it has a very solid appearance.
The photograph below (CC72/02364) shows men and boys beating the bounds at this wall in 1908:
It is usually assumed that the “long wall” that gave the street its name is the city wall, hidden behind the houses on the west side, but it could in fact be named after both walls, as it runs between them.