A reminder of the industrial history of the area now known as Walker Riverside Park.
I could be wrong, but I think that this is part of the site once occupied by the St. Anthony's Tar Works.
Newcastle City Council Ranger Service who manage the park, should give themselves a pat on the back for doing such a great job
For more information, visit their website at: http://www.newcastle.gov.uk/cw_rang.nsf/a/wrp?opendocument