This paper is based on rock art sites of the Maloti-Drakensberg massif (South African part), where more than 600 decorated shelters have thus far been identified. Being both institutionalised heritage sites open to the public and living heritage sites associated with various social practices and utilizations, their preservation requires us to consider the complexity of the values attributed to them. Combining a multidisciplinary and empirical approach, our paper highlights the processes of hybridization between attributed values, which therefore do not adhere to a strict category approach. Being strongly linked to the contexts in which they are articulated, their identification is coupled with a consideration of the macrodynamics in which rock art sites are integrated, as well as an analysis of the links between these different contexts and the value systems identified. In conclusion, the operational dimensions of such a methodology is questioned and some initial possibilities for action are proposed.