畿内亚高地是西非富塔贾隆南部的高原，从畿内亚东南部延伸至塞拉利昂和利比里亚北部及科特迪瓦西北部，是尼日尔尔河的发源地，平均海拔高度300至500米，最高点宁巴峰海拔高度1,752米。

The Guinea Highlands is a densely forested mountainous plateau extending from central Guinea through northern Sierra Leone and Liberia to western Côte d'Ivoire. The highlands include a number of mountains, ranges and plateaus, including the Fouta Djallon highlands in central Guinea, the Loma Mountains in Sierra Leone, the Simandou and Kourandou massifs in southeastern Guinea, the Nimba Range at the border of Guinea, Liberia, and Côte d'Ivoire, and the Monts du Toura in western Côte d'Ivoire.