We propose to tackle the issue of commons and cross-border governance in Africa through the example of cross-border parks shared between two or more countries on the scale of southern Africa. Since the mid-1990s and the end of the apartheid regime in South Africa, inter-state cooperation in southern Africa has increased. The establishment of Peace Parks, vast areas of cross-border conservation, contributes directly to this dynamic of rapprochement. These parks designate the meeting of two national spaces in order to coordinate actions to protect, manage, and enhance the environment. In addition to environmental cooperation, their objective is also to promote peace by easing tensions between countries that may have prevailed in the past. There are currently 18 such parks in southern Africa that are experiencing various stages of evolution. These newly created parks also question the issue of the commons insofar as several categories of actors (tourists, rangers, local populations, migrants, or poachers) go there and share the space according to the logic of use. and sometimes contradictory mobilities. In our presentation video, we first propose to return briefly to the genesis and evolution of these peace parks in Southern Africa which are part of a more global trend towards transboundary cooperation and conservation. We will then question their contributions in terms of environmental and economic management of common spaces. Finally, we will discuss the limits to cooperation, particularly in terms of prioritizing national interests, but also technical and institutional difficulties, and conflict resolution at the park level.