I understand the story behind the road in the exhibit, and it is a good story to tell as part of education, but if I had designed the exhibit myself the road part would have gone on the outside of the exhibit, for example as part of the visitor area or the theming, while keeping the exhibit more naturalistic and lush (which would be suitable for a mostly forest species like the cassowary, though I know they also sometimes go into more open areas and coastal areas).