Ngorongoro crater at 2286km above sea level is the largest and huge unbroken caldera in the world. Very steep walls rising 610m from the crater floor surround it. It is a natural amphi-theater, which measures 19.2 kms in diameter and 304 sq kms in area. It is a home to up to 30000 animals including some of Tanzania’s last remaining black rhino. The rhino emerge from the forests in the mists of early morning, and their pre historic figures making a striking impression, surrounded by the ancient crater walls. Animals are free to enter or leave the crater, but many of them stay for the plentiful water and grazing available on the crater floor through out the year.