The boys cannot swim but have received dive lessons from rescuers.
The boys cannot swim but have received dive lessons from rescuers.
Authorities are racing to drain water from a flooded cave in Thailand as part of a desperate attempt to save 12 trapped schoolboys and their football coach.
The world watches with bated breath while the boys, who have been stranded for almost two weeks now, are reportedly being trained in how to breathe with scuba equipment as they prepare for a possible attempt at leaving the cave this morning.
Timing is crucial in the complex operation as heavy storms are forecast, which could make it impossible to evacuate the group for months.
A 24/7 draining operation is now in place, but Thai authorities are still understood to be weighing up the best method of extracting the boys. The best option would be to rid the cave almost entirely of water, which would allow the stranded group to crawl 4km to safety, but they would still need to pass through short underwater passages.
However, because of the rains forecast to hit the area this week, Thai authorities believe teaching the boys to dive so they can be escorted out of the system by rescue divers, is the most realistic option.
A cave explorer helping Thai authorities trying to rescue the boys believes "we'll know in the next 24 hours" if they will survive.
British cave expert Vern Unsworth, who lives in Thailand, said conditions were getting worse and there was now a narrow window in which the group could escape.
"I think we'll know in the next 24 hours. We'll keep our fingers crossed, everybody needs to pray and hope for a good outcome," Unsworth told the BBC.
The boys, aged between 11 and 16, along with their football coach, have been trapped in the flooded Tham Luang cave system for 12 days.
But heavy monsoon rain is coming, and Mr Unsworth said rain that had already fallen had caused a dramatic rise in water levels in the cave.
"The main thing is to try to get the children to safety. We have to keep hoping. The water levels are rising, we had a lot of rain overnight."
He said the temperature of the water was cold, although the air temperature wasn't an issue.
The challenge ahead of the group is enormous — they cannot swim and are not divers. They have also been weak after spending days without food, but are gaining in strength after being given high-protein drinks.
Authorities insist they won't begin the rescue mission that has gripped the whole world until it was safe to do so. "We have to be 100 per cent confident that there is no risk to the boys before we evacuate," Narongsak Osottanakorn, Chiang Rai provincial governor, told reporters.
"We will take care of them like they are our own children," he said. The group are being taught how to use diving masks and breathing apparatus, he added, but from the safety of the muddy bank which, for now, remains their sanctuary.
Getting out of the cave won't be easy. The boys will have to dive about a kilometre, which cannot be done all at once. In total, it was expected to take three hours.
Another British expert, Gary Mitchell, described the challenging conditions. "There's air pockets along the way," he told the Associated Press.
"It's confined spaces. It's almost zero visibility. There's currents to battle against in places as well. So it's really quite a strenuous environment to be in."
Doctors and nurses were seen moving up to the entrance of the flooded cave last night, fuelling speculation that an attempt was imminent.
Medical staff were filmed leaving the staging area further down the slope and were on the move to the mouth of the cave as reports emerged the rescue mission could begin as soon as this morning.
Dive lessons
Classmates and friends of the schoolboys also reportedly were near the cave's entrance singing songs of support.
After a day of sustained pumping efforts, water levels inside the massive cave complex have been reduced and fierce currents have eased, The Australian reports.
However, that was before rain lashed the area yesterday afternoon.
The newspaper reports it has been told that fast-water currents inside the cave have eased to a standstill and with monsoonal rains expected to resume by Friday, conditions for the rescue are as good as they are likely to get.
Royal Thai Navy SEALs have been teaching the boys and their coach — none of whom can swim — how to breathe in a full face scuba mask.
Chiang Rai provincial governor Narongsak Osatanakorn said also warned not all of the 12 schoolboys and their coach may be able to come out of the cave at the same time.
"If the condition is right and if that person is ready 100 per cent, he can come out," he said.
Thai authorities have been working with Navy SEALs to run a fibre optic internet line into the flooded cave so that phone calls can be made in and out.
New video of laughing boys
Despite the imminent danger, the children have appeared in a new video, laughing as they greet the camera to say they are in good health.
The footage, published on the Thai Navy SEAL Facebook page, runs by 11 of the 13 members of the team, each makes a traditional Thai greeting gesture to the camera before introducing themselves by nickname and saying "I'm in good health".
Some appeared to be wearing a change of clothes since they were found late Monday and most were wrapped in foil warming blankets.
The reason the boys entered the cave, according to a Dutch diver working in Thailand, was to write their names on the wall as part of an initiation ritual.
Sky News reported that Dutch diver Ben Reymenants, who runs a diving school in Phuket, had contacted with the boys.
He said the boys had ventured into the Tham Luang Nang Non cave complex to write their names on the walls when a flash flood trapped them.
"They left their backpacks and their shoes before wading in there, trying to go to the end of the tunnel like an initiation for local young boys," he said.
