This picture taken on June 18, 2019 shows a young Sumatran orangutan named Elaine swinging on a line at the forest reserve in Jantho. - Five-year-old Elaine and another four-year-old primate spent nearly two years learning to fend for themselves at a rehabilitation centre and forest school before being returned to the wild at Pinus Jantho Forest Reserve. (Photo by CHAIDEER MAHYUDDIN / AFP) (Photo credit should read CHAIDEER MAHYUDDIN/AFP/Getty Images)
