Nouabalé-Ndoki National Park is a national park in the Republic of the Congo. Established in 1993, in the northern provinces of Congo, it is home to forest elephants, great apes, including western lowland gorillas and the eastern sub-species of chimpanzees and bongo. It is 3,921.61 km² of pristine tropical rainforest with no human habitation within it and with human population densities in its periphery that are comparatively low for the sub-region. The forests have a rich biodiversity of 300 bird species, plus 1,000 plant and tree species which include endangered mahoganies. In a conference of the Ministers of Forests of Central African Forest Commission, it had been resolved to establish within the Congo basin, the Sangha River Tri-National Protected Area with a total area of 11,331 km² encompassing the Dzanga Sangha Special Reserve and the Dzanga-Ndoki National Park in the Central African Republic, the Nouabalé-Ndoki National Park in the Congo-Brazzaville, and the Lobéké National Park in Cameroon. In 2012, all three national parks were awarded World Heritage.