First she freed the world's loneliest elephant from a grim and lonely life inside a Pakistani zoo. Now Cher is determined to save Bua Noi, the last remaining gorilla in Thailand, who has spent the past 30 years behind bars at a Bangkok shopping mall. Pata Zoo, located at the top of the Thai capital's Pata department store, has been branded "one of the saddest places in the world" by animal rights group PETA Asia - which called for the facility to be closed after an investigation this year found the animals languishing in concrete cells with no physical or mental stimulation.