Comparing the mapped cemetary to the aerial image, it looks like the extent is greatly understated. Also what, is labelled as the crematorium is offset by about 12m from the datum used for the rest of the area, and the presence of trees suggests it is not a building, but possibly walls with plaques. What looks like it might be the chapel isn't mapped at all. Although I may visit the site in the near future, it won't be for mapping. I think this area is badly in need of a re-survey (I may be able to confirm the chapel).