I hiked to the top of Thukela Falls, one of the highest in the world. There’s another terrific trek in the National Park to the base of the Falls.
Trip report from the Cooking in Tongues blog:
Royal Natal National Park, Drakensberg Mountains, South Africa, September 26, 2011
I’m up early hoping to catch the first rays of light on the Amphitheater. The cliff face glows in the early morning light just before 6. …
… about nine miles round trip up the gorge with great views of the Amphitheater. …
We follow the river upstream until we come to the confluence of two rivers. Here you have the option of taking the “tunnel” along the river through the gorge or climbing the chain ladder up about 50 feet to a path that bypasses the “tunnel”. …
besthike.com 
Thanks for the plug!