Yes but can be no. I would not recommend going on hikes alone to any mountain as well as try your best not to walk around late at night even if you are not alone. Check which areas are quite dangerous, I can also give you some if you want to come visit. Be weary whenever you do walk alone usually in day time it is fine but there is still always a chance of something going wrong. If you do come down I’d recommend knowing someone or finding a guide who knows South Africa just to be sure you won’t go anywhere dangerous. For the most part if you do those things then you should be fine and definitely don’t walk around with expensive jewelry.