Ely, the world’s saddest elephant, mourns alone for 8 years—so broken she now rams her head into her cage.

THE world’s saddest elephant, who has been alone for eight years, has developed depression while stuck in captivity.

Ely, trapped in a Mexico City zoo, has been caught ramming her head into the enclosure that has trapped her for 13 years.

Elephant in a zoo enclosure.

The elephant Ely stands in an enclosure at the San Juan de Aragon Zoo in Mexico CityCredit: AP

Ely, an African elephant, standing among rocks.

Ely, who is between 43 and 45 years old has lived at the zoo for over a decadeCredit: Newsflash

Two adult elephants protecting a baby elephant.

Ely also endured a terrifying illness while locked up, igniting a huge campaign to save her.

Campaigners have dubbed the friendless animal “the world’s saddest elephant” and revealed why her case was so tragic.

“I can’t be satisfied because an elephant can’t live in captivity, it hurts them mentally,” she said.

“It’s one of the animals that most suffers in captivity.”

Ely, an African elephant, standing in a grassy enclosure.

Mexico’s Supreme Court has this week ordered the zoo to work on implementing steps to boost Ely’s healthCredit: Newsflash

Visitors watch an elephant at the San Juan de Aragon Zoo in Mexico City.

Ms Valencia vowed to continue fighting for all three of the zoo’s elephants to be moved to a sanctuaryCredit: AP

Elephant at the San Juan de Aragon Zoo.

The zoo director denied Ely was depressedCredit: AP