Currently under major redevelopment as a new 'gateway' to the city. This polygon was probably meadowland in the early medieval period, due to its position in the base of the valleys created by the Porter and Sheaf rivers, which merge around this location. Archaeological excavation in advance of these works confirmed the presence of deposits relating to the Pond Tilt, the tilt forge set up in 1732-3 and in operation as a water-powered site until the 1850s when the site was reused as a sawmill. By 1891 much of the site was covered by a railway yard. In the late 20th century the Sheaf Square roundabout was constructed along with the former Hallam University buildings to the north of the polygon. No legibility of the historic development of this area, in the above ground landscape.