Vivi, Democratic Republic of the Congo (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
In Darkest Africa; or, The Quest, Rescue, and Retreat of Emin, Governor of Equatoria
by Henry M. Stanley"At Vivi, there were more cases than elsewhere, and the station was about 250 feet higher than Boma, and not a swamp was near it."