The clouds starting to form as moist air is pushed up by the mountain cliffs.
The moisture comes from the sea to the south and east and the winds are created by the sun backing the interior of the country. The drakensberg range is in the way and so the moist air is forced to go over the top of them. It's as this air rises that it condenses to form the clouds that produce plenty of rainfall and the magnificent erosion of the Flood basalt lava layers in picture.
The devils tooth at the top of aptly named fang pass.
