South Sudan is endowed with mountains which are strategically located in the Southern parts of the country.
The following are the major mountains of South Sudan
Imatong Mountains are located in the southeast of South Sudan in the state of Eastern Equatoria, and extend into Uganda. It is located some 190 kilometres southeast of Juba and south of the main road from Torit to the Kenyan border town of Lokichoggio.
The mountains are highest in the southeast where a group of peaks reach about 3,000 metres and the tallest, Mount Kinyeti, reaches 3,187 metres
The plains and the lower parts of the mountains are covered by deciduous woodland, wooded grassland and bamboo thickets to the north and west. The areas to the east and southeast are in the rain shadow of the mountains, with dry sub desert grassland or deciduous or semi-evergreen bush.
The mountains have rich diversity of flora, with hundreds of species that are found nowhere else in South Sudan. Their diversity is due to their position between the West African rain forest, the Ethiopian plateau and the East African mountains, coupled with their relative isolation for long periods during which new species could emerge.
Vegetation in the lower areas includes woodlands of Albizia and Terminalia, and mixed Khaya lowland semi-evergreen forest up to 1,000 metres above which there is montane forest with Podocarpus, Croton, Macaranga and Albizia.
The Nuba Mountains (also referred to as the Nuba Hills) is an area located in South Kordonfan,Sudan, stretching for some 48,000 square kilometres.
The mountains are a home to various fauna and flora, including a group of indigenous ethnic groups known collectively as the Nuba people.
The climate is semi-arid with under 800 mm of rain per year on average the rainy season extends from mid-May to mid-October, and annual rainfall ranges from 400 to 800 millimetres (16.4 to 32.8 in), allowing grazing and seasonal rain-fed agriculture
There are almost no roads in the Nuba Mountains; most villages there are connected by ancient paths that cannot be reached by motor vehicle.