The Sudwala Caves in Mpumalanga are widely described as the world’s oldest known cave system, with rock formations dating back about 240 million years and formed within much older dolomite estimated to be between 2.8 and 3 billion years old. Acidic groundwater developed the caves in Precambrian dolomite, with formation beginning long before Gondwanaland broke apart.
The caves are also known for their fossils, including remains of Collenia, an early oxygen-producing organism dating back hundreds of millions of years. Inside, visitors can see impressive natural formations such as the Screaming Monster, Lowveld Rocket, and Samson’s Pillar.
Evidence of early human activity has also been found in the caves, including primitive stone tools. The site is believed to have sheltered early hominins, potentially including Homo habilis, between roughly 1.8 and 2.5 million years ago.
Much later, the caves gained strategic importance during the 19th century. Somquba, a Swazi prince involved in a royal succession dispute, used them as a refuge and fortress. The caves take their name from Sudwala, one of Somquba’s captains who guarded their entrance. Local legends also claim that the famous “Kruger Millions” — gold and currency belonging to the government of Paul Kruger — were hidden somewhere in the unexplored depths of the caves around 1900. However, no conclusive evidence shows the treasure was ever there.
We took the standard 40-minute guided tour (🎟️140 ZAR), which took us approximately 600 metres into the cave system. For more adventurous visitors, extended four-hour crystal tours explore much deeper sections of the caves.
One highlight was the enormous central chamber, measuring about 70 metres across and 37 metres high. Its impressive natural acoustics are good enough to host concerts, and the caves maintain a pleasant, remarkably constant temperature of around 17°C year-round.
Parking location – Emgwenya: 25.6774682S 30.3631981E (🚻,🚿,🏊,💦,🅿️140 ZAR/pax)