The national parks and game reserves of the Southern Safari Circuit are, arguably, the hidden treasures of Tanzania's natural heritage. These parks are enormous, with some of the highest concentrations of animals anywhere in Africa and a spectacular diversity of wildlife. The travel times between parks in the South are long as the parks are far apart. The parks of the South can be visited independently, or as a circuit combining various parks into one package. Packages can be arranged using scheduled air services or as road safaris using 4x4 vehicles.