Malolotja National Park covers 4,447 acres (18,000 ha) of mountain wilderness on Swaziland's north western border with South Africa. The park includes Ngwenya Mountain, Swaziland's second highest mountain (1,829 m), and Malolotja Falls which drop 292 feet (89 m), the highest in Swaziland. Habitats include short grassland to thick riverine scrub, bushveld and Afromontane forest.
Malolotja National Park adjoins the Songimvelo Game Reserve in South Africa, and together they form the Songimvelo-Malolotja Transboundary Protected Area or Peace Park, which in turn is part of the Lubombo Transfrontier Conservation Area.
The region was identified as important by the Swaziland National Trust Commission in the early 1970s. At that time most of the area was sheep grazing land and much was privately owned. However, the area had little agricultural potential and residents were resettled on good agricultural land adjacent to Malolotja.
Animals in the park include zebra, wildebeest, reedbuck, blesbok, red hartebeest, oribi, leopard, serval, aardwolf, jackal and bushpig. The Natal ghost frog, plaintive rain frog and the gray's stream frog are endemic to Swaziland, South Africa and Lesotho. In Swaziland they have only been found in Afromontane mist belt forest.
Bird species include louries, sunbirds, sugarbirds, blue cranes and swallows. Bald ibises nest in colony on cliffs near Malolotja Falls. A number of bird species are of conservation importance, because their habitat is limited and threatened outside the park. They are the orange ground-thrush, brown robin, bush blackcap, chorister robin-chat, white-starred robin, grey cuckoo-shrike, olive bush shrike, southern boubou, Narina trogon and Knysna lourie.