The name is derived from a maasai word,meaning endless-plain,referring to its extensive plains. Serengeti National Park, a vast and beautiful park extends for 14,763 square kilometers,and it is most probably the world’s most famous wildlife sanctuary. With the status of a World Heritage Site and a Biosphere Reserve, Serengeti supports the largest concentration of big game in the world. In addition to watching the incredible great migration of almost two million wildebeest and zebra that takes place each year from December to August, many people visit the Serengeti to see the exciting big cats. The park draws 90,000 visitors annually, all hoping to view the long files of wildebeest and the predators that stalk them.Due to the important biological value of the park, several conservation and research efforts are underway in the Serengeti. The Tanzania National Park Association and the Frankfurt Zoological Society manage the park jointly.