@Arizona Docent it is a path through a walk-through enclosure. The whole photo is inside the enclosure. The wooden fence is simply to keep people on the path.
yes. At the bottom are separate enclosures for pelicans and (on the right) lemurs. Everything else in the photo is inside the wallaby enclosure, including the concrete steps of which I don't understand the purpose because, I mean, they are only a couple of paces away from a perfectly good concrete path..