Nothing a bit of fresh air while emptying ones personal store. Think yourself lucky its fix to the ground forva safer experience, mine isn't
So there was a hose with water to flush it that doubled up as a cold water bidet, all mod cons really. I wouldn't have expected a towel to be provided as well, a hygiene issue.
are you 100% sure it was the campsite toilet? having looked at the pic again, I'm beginning to think it looks more like some kind of altar, or maybe one of those story-telling areas for children