The Ngorongoro Crater is a natural amphitheatre created about 2 million years ago when the cone of a volcano collapsed into itself, leaving a 100 square mile (259km²) caldron-like cavity. This caldera, protected by a circular unbroken 2,000-foot high rim (610-metres), contains everything necessary for Africa's wildlife to exist and thrive.
Next door to the famous leisure and entertainment resort of Sun City, is the Pilanesberg National Park. It may not be very large (212 miles² (550km²) compared to Kruger or some of the other great African parks, but it has a real wilderness feel to it and most of the big animals you could wish to see.
Along Kruger National Park's western border are numerous small private game reserves, all containing safari lodges whose styles range from ethnic rustic to exquisite luxury, with a variety of chalets, cottages, suites and top class tented accommodation sometimes on raised stilts.