Tanga Region (Mkoa wa Tanga in Swahili) is one of Tanzania's 31 administrative regions. The region covers an area of . The region is comparable in size to the combined land area of the nation state of Burundi. The regional capital is the municipality of Tanga city. Located in northeast Tanzania, the region is bordered by Kenya and Kilimanjaro Region to the north; Manyara Region to the west; and Morogoro and Pwani Regions to the south. It has a coastline to the east with the Indian Ocean. According to the 2012 national census, the region had a population of 2,045,205. History The region was previously known as Tanga Province and included Same and Mwanga Districts that are at present in Kilimanjaro Region. Geography Geology and terrain Tanga Region is the 15th largest region by size with an area of , after Songwe Region at . An area occupying 3% of the country. In comparison Tanga is larger than the African nation of Burundi at 25,680 square kilometers. The Tanga Region shares land borders with four other regions and three regions across the Pemba Channel namely; Pemba North Region, Pemba South Region and Zanzibar North. Tanga northwestern area is of high elevation, home to the Usambara Mountains with Tanga Region's highest point being Chambolo peak at 2,289 meters above sea level. The largest and longest river in Tanga Region is the Pangani River, fed by the Umkomazi River, Soni River and the Lwengera River. Tanga Region is located between 4 and 6 degrees south of the Equator. Another major river, the Mligasi River forms the southern border between Pwani Region and Tanga Region. Tanga Region is also home to largest cave system in East Africa, the Amboni Caves located a few kilometers north of Tanga city. Flora and Fauna Tanga is home to rich biodiversity of plants and animals. Tanga Region is home to two major national parks, Mkomazi National Park, shared with southern Kilimanjaro Region. The park is home to the endangered Black rhinoceros and the African wild dog. The second national park in Tanga Region is the Saadani National Park, The only national park in the country that shares an ocean coastline. In the northwestern portion of the region is the Usambara mountains with the Amani Nature Reserve, home to the endemic fauna such as Amani Forest Tree Frog and Usambara torrent frog. In the forest, rare bird species