All that land and the binturong only received that tiny plot of it in the back. Like most other exhibits in the zoo, this looks very old and possibly used to housed larger carnivores in the past.
@Rizz Carlton The initial impression of the zoo is awful, with a couple of terrible Binturong exhibits, the small Aquarium, loads of prison-like primate cages, etc., all leaving a very bad taste in one's mouth. The zoo does get better (the separate admission Primate Center is amazing), but there is a LOT here that needs to be bulldozed.
@snowleopard I definitely have the same opinions as yours. As the revitalization of Ragunan is a dream for me, though just like I said in the Ragunan Zoo thread, it will have heavy costs and the end well result most likely aren't going to be better.