the country are: Northern Province Nsumbu National Park/Kaputa GMA/Mweru Wantipa National Park is a contiguous area stretching from the hills at the north-east end of Lake Mweru to Lake Tanganyika. It is rich in wildlife, particularly at the eastern end on the shores of Lake Tanganyika. It has been under pressure due to the Second Congo War in neighbouring DR Congo and a consequent influx of refugees. Mweru Wantipa has seen an influx of people engaged in fishing, and protection in the west of this region has not been enforced for decades. The transnational waters of Lake Tanganyika support a great diversity of fish, much of it unique and exploited by the international aquarium trade, as well as crocodile, hippo and aquatic birds. The often precipitous sides of the rift valley extending around the south-eastern extremity of the lake to Kalambo Falls are also a wildlife habitat for birds, smaller mammals, reptiles and leopards. Bangweulu Wetlands: these are internationally recognised wetlands and their south-eastern buffer zone include: Lavushi Manda and Isangano National Parks, and the Chambeshi, Luwingu and Bangweulu GMAs. Kasanka in Central Province is also part of the southern buffer zone. The wetlands are vital for the breeding of a number of bird species and as a feeding ground for migratory birds, as well as for the black lechwe, sitatunga and numerous large mammals. They are under pressure from poaching, fishing and livestock grazing, and chitemene cultivation on the margins. Muchinga Province Muchinga escarpment overlooking the Luangwa Valley: the rocky hills and scarps do not host a huge amount of wildlife, but smaller mammals, birds and leopards do make it their home. Although North and the northern part of South Luangwa National Park are technically in the Muchinga Province, primary access to the parks is from Eastern Province so they are covered in that section. Nyika National Park: the Nyika Plateau in the north-east is mostly in Malawi. Zambia's small portion is noted for its montane vegetation, orchids and other vegetation, as well as herds of eland, zebra and other animals such as leopards. Luapula Province Lake Mweru-Luapula River system: the Zambian side of this transnational lake and river system has a relatively high human population. Wildlife is restricted mainly to the plentiful bird life, and aquatic animals in the lake and swamps, such as hippos, crocodiles and otters. The lechwe population which grazed the floodplain mainly on the