I'm afraid not. It's an island (originally for chamois, then markhor) connected to the original gorilla enclosure by a gate and a causeway. It can be very hard to see the gorillas when they are on the island as there is a fair width of water and a lot of vegetation. I'll take my binoculars next time I visit, but I'll add my zoom lens so that I can try to show the whole thing too.
It really doesn't take too long for vegetation to become established to the degree the Gorillas won't damage it badly. I can remember seeing this hill when it was home to Chamois many years ago- it was just a completely bare mound then.
So many Gorilla exhibits could be hugely improved just by additional 'heavy' planting of shrubs and bushes as well as trees.