It seems as if all of the primate enclosures at Gorge Wildlife Park (gibbon/spider monkey/Japanese macaque/capuchin/etc) are tiny metal cages with swinging tires. Perfect animal habitats for the 19th century!
P.S. You have uploaded many doubles of photos from Gorge in the past couple of hours.
I noticed that they seem to have been uploaded twice - I can assure you it wasn't me! I tried to upload and the system just froze me out. And a couple of pics didn't even get posted.
As for the primate cages, they are larger than they look.
