Trombonist on Family Tree Circles

I have been seeking information re great grandparents and aunts and uncles. I would dearly like to visit the grave of my great grandmother Isabella Mack (Bella) in Dunedin but need to find her grave in the Northern Cemetery, Dunedin. I have seen that she is buried with her aunt Agnes carline. I would also like to visit the grave of my great great grandparents (Thompson) who are in the same cemetery.The latter are the parents of my maternal grandmother Lottie who is buried in the Ruru Lawn Cemetery in CHRISTCHURCH.