Ravine

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Seweweeks Poort, Swartberg
https://www.sa-venues.com/attractions/gallery/easterncape/440/4.jpg
Tsitsikamma National Park, Eastern Cape
https://en.wikipedia.org/wiki/Potassium_alum
Aluimkloof, Calitzdorp- Western Cape
Wonderboom Nature Reserve, Pretoria
Welgelegen Farm, Stellenbosch
https://sites.google.com/site/mareascott/_/rsrc/1254381395832/news/Table-mountain-news/the-waters-of-life/6.JPG
Table Mountain Water Supply
https://www.greytontourism.com/wp-content/uploads/2015/10/Greyton-Old-DRC-Church-2-300x220.jpg
Greyton, Western Province