Isinuka Mud Caves and Sulphur Pools
The Isinuka Mud Caves and Sulphur Pools are located next to the Isinuka village which is located in OR Tambo District Municipality, Eastern Cape, South Africa. The name "Isinuka", means "place of smell", which refers to the odour of the sulfur which diffuses from the springs.
Source: Wikipedia — Isinuka Mud Caves and Sulphur Pools (CC BY-SA 4.0)