Hi Bobpc,
As a sanddancer myself I'm sorry to say there's very little to see in South Shields -
The Rev Greenwell excavated a tumulus on or near trow rocks; apparently finding a sword which is now in the collection of the British museum, unfortunately no trace of the mound is left. The Shields museum has several prehistoric artifacts including a bronze winged axe head but that's not on display and you've got to arrange a viewing with the curator.
Very early remains of flints and stone tools as well as auroch bones were found in a cave on Cleadon hills in the late 1800's, but I've been unable to locate the cave (probably quarried out), although I'm sure somethings are still there to be found - I'm still hoping for the big Shields rockart panel ;-)
Akas