There, about 200 miles south of Johannesburg — a relatively easy three-and-a-half-hour drive — you’ll find Royal Natal National Park and some of South Africa’s most impressive geology: craggy gorges, cloud-piercing peaks and “the Amphitheater,” a cirque of sheer cliffs that looms like a massive rampart some 4,000 vertical feet over the bottomlands. The Zulu call this area uKhahlamba, the barrier of spears. Dutch settlers called it Drakensberg (Dragon Mountains).