Though the terrain may be suitable, this doesn't really remind me of gelada habiitat. Where I have seen them, the cliffs were more steep with a very flat plateau on top. This is more suitable than lots of places where they are kept of course.
To me it looks more like where I have seen Hamadryas Baboons in Saudi.
Edit: Just read through the previous posts properly (I skim-read initially) and noticed that I have partially repeated Maguari, sorry.