The fact that there was a concentration camp in Johannesburg is surprising, although logically it was inevitable, given the amount of refugees that were coming to the town. (Johannesburg was founded in 1886 so it was still a relatively new town).
It would be interesting to know what the original layout of the cemetery was, but that information is probably gone forever. The names are listed on a plinth on the top terrace, and it is here where the plaque on my second image is found.
A number of the original headstones have been preserved in the small entranceway, but I am sure there were many more originally. Where have they all gone to?
As a piece of history the site is really important, however when it comes to understanding what you are seeing it fails dismally.
And I think this is part of the problem I have with the whole concentration camp saga. The version we were taught in school was highly skewed and did not contain any facts that would stand up to scrutiny, and those who froth and foam about the behaviour of the British do not stand at the gates of a place like this ready to cut grass or explain just what you are seeing. The truth has been left by the wayside, just like these memorials have been. The cemetery may be found at Google Earth co-ordinates -26.272334° 28.024066°