Waterfall

I think this photo was taken facing the other way from the other photo you posted

The wall at the top of the waterfall still exists albeit the diagonal is on the other side. Are these slides? Could they be mirrored?

I quickly mirrored your photo online and it definitely is the spot

that is a very impressive identification, Herostratus. I seem to recall this is right next to the Paul Dutoit memorial plaque (https://gwulo.com/media/33017).

Good job on locating this one. I've flipped the photo to be the right way around and also lightened it a bit.