evidence: Eswatini, landlocked country in the eastern flank of South Africa, where it adjoins Mozambique. It extends about 110 miles (175 km) from north to south and about 80 miles (130 km) from west to east at its largest dimensions. [...] The Lubombo escarpment and plateau covers about 5 percent of the country, consisting of a narrow strip of about 600 square miles. It rises abruptly from the Lowveld to an average altitude of 2,000 feet, with higher peaks (Siteki and Mananga) of about 2,500 feet in the north. It is deeply dissected by the gorges of three of the main rivers that traverse the country from west to east, the Umbuluzi, the Usutu, and the Ingwavuma. The plateau soils vary considerably, from shallow sands to deeper loams, depending on the composition of the volcanic lavas that form the bedrock. The Swazi have no specific name for this part of the country. Eswatini is one of the best-watered countries in southern Africa. Major perennial rivers, which have their sources in South Africa, flow through the country to the Indian Ocean. They are the Lomati, the Komati, the Umbuluzi, and the Usutu. The Usutu has the largest catchment in the country, with three main tributaries, the Usushwana, the Ngwempisi, and the Mkhondvo. In the south the Ingwavuma rises in western Eswatini and also cuts through the Lubombo.