Ngorongoro

Simply known as "the Crater" in East Africa for very good reason. It is the largest caldera in the world with an unbroken rim, and is a veritable zoo. All the rainfall in the crater remains as, first, pools of fresh water and then flows into a lake to evaporate, so there is year-round habitat for animals. Only the giraffe cannot negotiate the steep walls of the rim. Nights spent camping up on the rim of the crater require good warm clothing and sleeping bags and tents. Elephants frequent the water tank for the bathhouse and warthogs wander through the camp at night.