Looking at the scenary it looks like the Blyde river canyon area in Mpumalanga,so they are in the panorama route they havent put them in the kruger national park..nowhere near any wild animals
http://www.southafrica.net/za/en/articles/entry/article-southafrica.net-gods-window
http://www.southafrica.net/za/en/articles/entry/article-southafrica.net-gods-window