Answer:
From what I could understand from your question, you require a map location for the Barberton Makhonjwa Mountains. I am attaching map pictures to give a reference for the location. If there is anything else you want to know please elaborate in the question.
Barbeton Makhonjwa Mountains are located in South Africa, in the province of Mmupalanga. As the name implies, these mountains are in the town of Barberton and are a part of the World Heritage sites as they contain the world's oldest geological structures. Volcanic and sedimentary rocks estimated to be between 3.6 and 3.25 billion years old are also preserved there.