There are so many travel agents and private rangers oragnizing the tours in Southern Africa that it would be difficult to mention all of them. Don't get me started on the topic... I, for one, can recommend this site: http://www.africantravel.com and have high esteem of http://mpumalanga.lodgeguide.co.za/M...ain-lodge.html
who organized for us safari in Kruger National Park and also took us around splendind places in Mpumalanga where you could see pristine forests and savannah of flat crown trees viewed from stoep and beautiful high- and low-velds. They also oragnized guided tour trips to Mozambique and Swaziland braais and fishing adventures. These were the days...

If you have a group of people you could hire private rangers who will show you unique places where hardly anyone ventures, thus making it more interesting. Would you care putting your hand inside crocodiles jaw