To the best of my memory Lisburn Borough Council built this BMX track, at what is now the Bell’s Lane amenity area, more than 30 years ago when it was one of the first (if not the first) in NI. I haven’t seen it in use in recent years so it might be a former BMX track. Now a popular place to walk the dog. J2766 : BMX track, Lambeg (July 2018) shows it after rebuilding.