At the northern end of Lister Park is a fascinating geological garden, with this little stream flowing down through it, linking together the various features of the garden, which include a fossil tree stump discovered in a quarry on the outskirts of Bradford, fossils embedded in the path around the fossilised trunk, rocks of various types and a recreation of a waterfall from the Yorkshire Dales, complete with a geological unconformity.
Thank you all for your comments, they are very encouraging!
Ian