The Dzata Ruins (or Dzana ruins) are an archaeological site in Dzanani in the Makhado municipality, Vhembe district, in the north of South Africa. Scholars who have made a study of the various legends and traditions associated with the ruins, find it clear that they are many contradictions. Archaeological evidence has shed some lights on these events, but a great deal of work still remains to be done. It is certain that Dzata was built at an earlier date than many people are willing to admit. Radiocarbon dates suggest a beginning shortly after AD 1700, with an end some 50 to 60 years later. 
Documentary proof of this is found in Dutch records, which refer to an interview in 1730 with an African by the name of Mahumane, who had visited the kingdom of Thovhele some five years previously. Mahumane described a settlement built of dark-blue stone, with a wall enclosing the whole area. He also mentioned that the chief cities are made of the same stone. To date no stone-walled settlement has been found that is made of dark blue stone, other than Dzata. There is no doubt that Dzata was the capital of united Venda.
It is not clear what the role of the legendary Thohoyandou was at this stage. It is highly unlikely that he could remain chief throughout this period of a minimum of 50 years that Dzata was the capital. Oral history indicates very strongly that it was after the disappearance of Thohoyandou that Dzata was abandoned, and the Venda nation fragmented once more into independent chiefdoms. It seems very likely that Thohoyandou expanded the Venda empire to cover areas as far south as the Olifants River near Phalaborwa. No doubt trade played an important role in this.
Dzata ruins is now one of the national monuments in South Africa.
Venture off the beaten track 50km north-east of Louis Trichardt on the R523 between Thohoyandou and Makhado and you’ll find the Museum of the Drum and Dzata ruins. 
 
The rural peacefulness of the place makes it hard to believe that this was once a thriving community. This significant archaeological site is the remains of the royal kraal of the Venda kings and dates back six thousand years to 1400. Here you can learn about the rich art culture of the Venda and their famous domba dance at the Museum of the Drum. The building houses a replica of the enormous holy drum, reputed to have magical powers that incapacitate enemies. 
Entrance to the Museum of the Drum and Dzata ruins is free.
References

 

http://lekkelouis.co.za/Item/entertainment/dzata-ruins/https://www.safar...(louis-trichardt)/galleries and museums/museum-of-the-drum-and-dzata-ruins.aspx

Dzata Venda Ruins and Museum of the Drum, Louis Trichardt