A stranded mother elephant and her calf were rescued from a golf course drain before vets revived the unconscious jumbo with CPR.

The animal and her baby slipped into the 7ft deep hole during a storm which made the grass muddy and wet in Nakhon Nayok province, Thailand on July 13.

Vets were struggling to free the pair because of the torrential monsoon rainy season conditions. The distressed mother was also standing over her child to try and protect him.

Wildlife volunteers tranquilised the 10-year-old mother but she hit her head on the edge of the concrete structure - knocking her unconscious.

Worried vets immediately revived the jumbo when she was pulled out of the hole with a cherry picker crane. Dramatic footage shows three vets using their weight to put pressure on the animal's chest to wake her up.

The one-year-old calf was rescued shortly after. It took the team more than three hours to finish the operation.

Khao Yai National Park Department vet Dr Chananya Kanchanasarak said: ‘It was impossible to get near the baby while the mother was nearby so we gave her three doses of tranquilisers but she moved towards her baby before passing out and hit her head.'

Dr Chananya said the mother 'regained consciousness after being stimulated by both me and the baby'.

Park rangers also feared that the mother would cry for help from the 30-elephant herd nearby if they force their way to pull the baby so they called the vets instead. A team had set up a temporary barrier to prevent them from approaching the mother and baby elephant.

While the mother was passed out in the hole, the baby elephant who had been trapped since the night before suckled milk which gave vets some relief.

A crane was used to pull the creatures out of the muddy drain before the vets continued with their work. The moment the mother touched safe grounds, three vets jumped on her to revive and wake her up as the impact of falling on her head could have hurt her.

Fortunately, the mother elephant woke up with the vets and park rangers fleeing the scene to let the jumbos reunite.

Delighted park rangers and emotional vets were seen watching the mother and one-year-old baby disappear back into the forest.

Dr Chananya added: ‘Despite the obstacles, the mother did not leave her baby's side. This experience touched our hearts and will be one of the most memorable rescues we've done.'

The vet said that both 'mother and baby are safe' and she thanked people for the 'hard work of all parties involved in the rescue'.

There are an estimated 4,000 elephants in Thailand. About half of these live in captivity in animal camps, zoos, and sanctuaries while the remainder are found roaming national wildlife parks.