Rosso
Rosso lies on the northern bank of the Senegal River, where the waters of the river meet the dry lands of Trarza. Seasonal floods spread across the valley, providing fertile ground for cultivation and pasture. The river also carried boats and trade between the interior and the Atlantic. Along its banks, farming communities and pastoral peoples maintained connections across a landscape that changes sharply from the watered floodplain to the dunes of the Sahara.