What I'm going to do here is just have photographs, rather than attempt to name the features or provide a running commentary. I hope that's all right with you. I will point out, though, that those aren't penguins standing on that projection; those are tourists, none of whom speaks English (except the ones from England).
Well, maybe I will have a little bit of running commentary. As you walk along the rim, every step opens up a new vista, a new photo-op. At some point you have to just say, "All right, already. You've shot enough pictures. Just enjoy the view."
So here are the photos.