It currently is full of creepers, but they tend to just grow for the summer, as with any zoo, enclosures that rely on natural plant growth generally go rather bare during the winter months! But during the Summer months it is almost impossible to see through the enclosure and at some parts impossible to see through the fence!
I agree the older of the current lion enclosures isn't bad (particularly compared to older ones) and there is space to extend it.
The enclosure Dusty & Tanya occupied had a dividing fence as the snow leopards have now. I can't be 100% certain as its about 30 years ago, but I don't remember it having a roof then. When I first saw the snow leopards there about 12 years ago I did think the roof was an addition to the old enclosure.
