"A leopard doesn't change his spots" or in this case "A tiger doesn't change his stripes" ... A zoo is a zoo, not matter how much denial and defence the PR department may present.
Animal: I doubt they have access to the hill (would they otherwise all be hanging out by the moat) but someone who has been there might tell us.
It is a couple of years ago since I have visited DAK. But IF(!) I remember correctly, then the tigers have access to the hill AND there is a second exhibit for the tiger as well.
Where are the Florida residents, when we need them...?
Yes the tiger exhibit is MUCH larger than what you see here. This is only the first viewing area of the first exhibit. Probably not good to speculate about things you've never seen personally. There are plenty of other shots in this very gallery showing off other regions of the exhibit.