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The Mayombé Massif is a low mountain range in the Republic of the Congo, situated inland from the Atlantic Ocean coastline. This rugged range features steep peaks and deep river gorges, with Mount Berongou reaching 2,963 feet (903 meters). Mount Bamba, at 2,625 feet (800 meters), is also located within the Mayombé Massif. East of the massif lies the Niari valley, which transitions into plateaus and eventually the Congo basin plain in the northeast. The region is characterized by its varied relief, from coastal plains to inland plateaus and river systems.12

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