Tsavo East National Park is one of the oldest and largest parks in Kenya at 13,747 square kilometres. Situated in a semi-arid area previously known as the Taru Desert it opened in April 1948, and is located near the town of Voi in the Taita-Taveta County of the former Coast Province. The park is divided into east and west sections by the A109 road and a railway. Named for the Tsavo River, which flows west to east through the national park, it borders the Chyulu Hills National Park, and the Mkomazi Game Reserve in Tanzania. Geography Inside Tsavo East National Park, the Athi and Tsavo rivers converge to form the Galana River. Most of the park consists of semi-arid grasslands and savanna. It is considered one of the world's biodiversity strongholds, and its popularity is mostly due to the vast amounts of diverse wildlife that can be seen, including the famous 'big five' consisting of lion, black rhino, cape buffalo, elephant and leopard. The park is also home to a great variety of bird life such as the black kite, crowned crane, lovebird and the sacred ibis. Tsavo East National Park is generally flat, with dry plains across which the Galana River flows. Other features include the Yatta Plateau and Lugard Falls. Tsavo West National Park is more mountainous and wetter, with swamps, Lake Jipe and the Mzima Springs. It is known for birdlife and for its large mammals. It is also home to a black rhino sanctuary. Archaeology and history Although a few Early Stone Age and Middle Stone Age archaeological sites are recorded from ground surface finds in Tsavo, there is much evidence for thriving Late Stone Age economy from 6,000 to 1,300 years ago. Research has shown that Late Stone Age archaeological sites are found close to the Galana River in high numbers. The inhabitants of these sites hunted wild animals, fished and kept domesticated animals. Because of the sparse availability of water away from the Galana River, human settlement in Tsavo focused on the riparian areas and in rock shelters as one moves west. Swahili merchants traded with the inhabitants of Tsavo for ivory, catskins, and probably slaves as early as 700 AD (and probably earlier). There is no evidence for direct Swahili "colonization" of Tsavo. Instead, trade was probably accomplished by moving goods to and from the Swahili Coast via extended kin-networks. Trade goods such