sentences:  It initially flows down from the Chaillu Mountains, along the border with Congo, and then turns northwest, flowing through the towns of Fougamou, Sindara and Mouila before flowing into the Ogooué.The river name, Ngounié, is a French rewording of "Ngugni", which was originally used by Vili language speakers in the Samba Falls/Imperatrice Falls area in the mid-1800s to call the northern border of their district, "Nsina-Ngugni".When Robert Bruce Napoleon Walker and Paul Du Chaillu arrived in the area, they wrote down "Ngouyai" or "Ngunyé".