Close to the start of the Green (Uve) Trail in Krantzkloof nature Reserve, you will come across this memorial.
Curiously, the words in the inscription ask you to 'spit on a stone' and then to 'place it on the memorial'.
Background to this comes from the press cutting excerpt below.
The Kloof house of father, nature conservationist and engineer Greg Bosch had been burgled once again and he had gone into the surrounding bush to try and retrieve his possessions from black squatters hiding out there, who are known to prey on defenceless, elderly residents in his quiet suburb.
He was gunned down while he lay in wait for the robbers.
Police spokesperson Danelia Veldhuizen said that a group of joggers found Bosch's body.
Police are investigating the burglary and killing.