There used to be ones in front of the Dixon Day Halls at the corner of Cathcart Road and Dixon Avenue. As far as I can tell the just flung some earth and grass seed over the entrance and fenced the gate off. https://www.google.co.uk/maps/@55.8337922,-4.2560802,3a,75y,328.22h,81.8t/data=!3m4!1e1!3m2!...