The Cango Caves are the best known and most accessible cave system in South Africa. Choose between the standard tour that takes you through a series of deep caverns with lots of stalactites, stalagmites and flow structures, or a longer adventure tour that has you crawling on your belly and shimmying around narrow tunnels. The adventure tour option is not for the faint of heart, the claustrophobic, the dodgy of knee or the too-generously endowed.