Recherches archéologiques sur les amas coquilliers de la Basse Casamance : le cas de Niomoune dans les îles Bliss, Sénégal

Anthropogenic shellfish mounds exist in all the Bliss Islands (e.g., Niomoune, Hitou, Kandé), in Senegal. They are now threatened by anthropic activities and by the effects of climate change. In the perspective of rescue archaeology, our study focuses on the Niomoune shell mounds which are the most threatened. Of the eight clusters found at Niomoune, two are sacred (Arch 06 and Arch 08). Despite being reworked, these shell mounds are thought to predate the current settlement of Niomoune. Our prospecting and excavation work has enabled us to establish a material culture history including remains of ceramic, iron, and glass. The five charcoal samples dated by radiocarbon place the beginning of the occupation of Niomoune between 21AD and 204AD. This chronological sequence belongs to the early Iron Age in Senegal, which began in 1100 BC at Dialowali, Senegal River valley. This paper aims to determine the periods of the different human settlement dynamics at Niomoune based on the archaeological data, and to characterize the artefacts collected by placing them in the cultural ensembles of the Lower Casamance.