Udzungwa Mountains National Park, with an area of 1,990 square kilometres (770 sq mi), is part of the Eastern Arc Mountains (which comprise mountain ranges from the Taita Hills in southern Kenya to the Makambako Gap in south-central Tanzania). Sometimes called an African Galapagos for the uniqueness of its wildlife, the park encompasses hills ranging in elevation between 250 metres (820 ft) and the 2,576 metres (8,451 ft) of Lohomero peak, the highest in the park. The park's habitat covers tropical rainforest, mountain forest, miombo woodland, grassland and steppe. The park has the distinction of holding 30-40 percent of plants and animal species of Tanzania. More than 400 bird species and 6 primate species are reported from the park. It has the second largest biodiversity of a national park within Africa. It is included in the list of 34 World Biodiversity Hotspot. It is also listed as one of the 200 WWF Eco regions of global critical importance. Six primate species have been recorded, five of which are endemic. The Udzungwa red colobus and Sanje mangabey are only found in the Udzungwa Mountains National Park; that mangabey was only recognised as a distinct species in 1986.