The death of a Thai navy diver in the rescue mission of the 12 boys of a football club and their coach, who have been trapped in a cave for 13 days now has revealed just how risky the rescue mission is.

The former Navy Seal died on Friday,  reportedly on his way back to an underground command center after he ran out of oxygen.

The boys, who are trapped 4 Kilometres from the entrance of the narrow Tham Luang cave, were discovered alive nine days after they were marooned by two British divers.

The monsoon rains have complicated the rescue operation, even as thousands of litres of water continue to be pumped out of the cave.

Thai officials have said that they are working round the clock to bring the troop to safety but the operation is deadly and they want to ensure that all the 13 civilians are extracted safely. The rescue team is however racing against time with weather forecasts warning of looming storm.

Part of the rescue plan coated was to let the boys stay in the cave for some time until the weather situation eases up but the option is also risky considering Thai’s unpredictable rains, which could come with flash floods, consequently raising the water levels in the cave even higher and complicate the mission even further.

It took the divers who rescued the kids four hours to get to where the troop is trapped and therefore the possible alternative that the team is likely to resort to extract the teenagers , bringing them out with Scuba gear, will also be difficult considering that most of them cant swim let alone dive.