Plettenberg Bay, nicknamed Plet or Plett, is the primary town of the Bitou Local Municipality in the Western Cape Province of South Africa. As of the census of 2001, there were 29149 population. It was originally named Bahia Formosa (beautiful bay) by early Portuguese explorers and lies on South Africa's Garden Route 210 km from Port Elizabeth and about 600 km from Cape Town.
Caves in Nelson's Bay Cave and Matjies River Cave at nearby Keurboomstrand indicate they were inhabited for over 100 000 years by Middle Stone Age man and then later by ancestors of the Khoisan, who were possibly the same people who traded with the Portuguese survivors of the San Gonzales shipwreck. Their tools, ornaments and food debris can be viewed in these caves, which are still being excavated.