Gorillas bang on enclosure windows at Bristol zoo three years since it's closing

Footage has emerged of a troop of gorillas still living inside the long-abandoned Bristol Zoo - three years after it shut its gates to the public. The video shows the apes pressing against the glass of their enclosure, as the visitor claims they were able to 'just walk straight in' with no sign of staff or security on site. In the clip, one gorilla can be seen tapping on the window as the camera pans across overgrown paths, empty habitats and deserted visitor buildings.