The Great Limpopo is one of the largest Transfrontier Conservation Areas (TFCAs) in the world, encompassing vast areas in South Africa, Zimbabwe, and Mozambique. The TFCA concept is embraced by practically all (international) conservation agencies. The rationale for the support is that the boundaries of ecosystems generally do not overlap with those of the nation-state. Their protection requires transnational cooperation. By arguing that local communities living in or close to TFCAs will participate and benefit economically, TFCA proponents claim social legitimacy for the project. However, analysis shows that communities first have to live up to rigid standards and requirements set by the international conservation authorities, before they are considered ‘fit’ to participate. Communities attempt to resist this type of marginalization by forming alliances with (inter)national development and human rights NGOs, with mixed results.