Ngorongoro Crater, located in the East African Rift Valley in northern Tanzania, is one of the largest and best-preserved volcanic craters in the world, with a diameter of about 18 kilometers and a depth of 610 meters. The caldera was formed by a volcanic eruption about 2.5 million years ago and has a bottom area of 310 square kilometers with diverse ecosystems such as grasslands, forests and lakes. It is home to about 30,000 animals, including the five African lions, elephants, rhinoceros, buffalo and cheetahs, and more than 200 species of birds, making it one of the most densely populated wildlife gatherings in Africa, and it is known as the “Garden of Eden in Africa”.