Behind an apparently simple and « shy » demeanor, the Bassari feminine world conceals great complexity, characterized by women being mysterious and decisive at the same time. Such behavior is the power of the women of Ethiolo.The purpose of the project is to study the Bassari feminine world in Ethiolo (a village located in Eastern Senegal on the border with Guinea-Conakry). Such world cannot be understood without simultaneously observing the masculine world of the Bassari and the interaction of between the two.The main subjects of the following paper are: the analysis of the age system, which lays at the basis of the social organization of the Bassari population, the analysis of the administration of power, based on the control of the secre...