This exhibit is like a smaller, crappier version of the gorilla habitat at San Diego Zoo Safari Park. It is probably one of the smallest outdoor areas for gorillas to be found at any North American zoo, making it quite outdated.
@snowleopard that is exactly what I thought when I saw it. I didn't write it here because it's been a good 25 years since I was in SD Safari Park, so I wasn't sure if it was still like that.