Since we had only 2 days in Joburg, Thope had suggested a visit either to Maropeng or Sun City. Google it, she had said, referring to Maropeng. I’d never heard about Maropeng but when I discovered its background and that it had been declared a World Heritage Site by UNESCO in 1999, there was no doubt where we’d go. About an hour’s drive from Johannesburg, Maropeng, the “Cradle of Civilization”...