The Kalahari is the largest sand basin in the world, stretching 1,560 miles (2,500km) from the northern part of South Africa, through Namibia and Angola and ending in the DRC (Congo). It may have no permanent surface water, but unlike the image of most deserts, the Kalahari is well vegetated with a wide variety of habitats including acacia trees and areas of flat grasslands that seem to stretch forever.
The Luangwa Valley covers almost the entire eastern region of Zambia and contains some sensational national parks. North Luangwa National Park is one of the most spectacular surviving wilderness areas in Africa and has been called "one of the greatest wildlife sanctuaries in the world today." It is so remote that self-drive safaris are not allowed and you may only enter if accompanied by a licensed guide. There is really only one main road leading there, but fly-in safaris make it accessible.