As far as im aware, Monato actually already have an elephant enclosure.... they built a large moated area for the last of Adelaide's elephants, but she didn't last long as she fall into the moat and died in the struggle to get her out (maybe one of the zoo historian's could confirm or add further details about this) i dont know what currently uses this area, but i don't believe they've "removed " it as such. I can imagine Perths 2 elephants moving here, as its the closest option for them by road, and they would be quite disruptive to any other zoos elephant herds