No oxygen

No oxygen

Three months ago, Xisco Gracia experienced what he describes as every diver's worst nightmare - he found himself without oxygen in an underwater cave, relying on an air pocket for survival. As hours turned into days he realised he might not be found in time.

On Saturday 15 April, Xisco Gracia slipped into the water in Mallorca for a routine dive. The geology teacher spent most weekends exploring and mapping the island's complex system of underwater caves.

"Mallorca is much more beautiful underground than above ground," he says.

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He and his dive buddy, Guillem Mascaro, wanted to explore Sa Piqueta, a cave with numerous chambers 1km from the entrance of the labyrinth. They swam underwater for an hour to get there.

While Gracia spent time collecting rock samples, Mascaro swam off to chart a nearby chamber.


It was as they headed for home that several things went wrong at once. Gracia met Mascaro by chance at a junction, and they stirred up silt from the ground, making it difficult to see.

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They then realised that their guideline - a narrow nylon wire which led back to the entrance - had either broken or slipped.

"The wire is for guiding purposes. It is left behind once you enter the cave and you can follow it out again afterwards," Gracia, 54, says.

"We can only guess some rocks had fallen on it. We spent a precious hour trying to find it by touch, but without success."

By this point the pair were in grave danger. They had consumed the oxygen they had brought to get them in and out as well as most of their emergency oxygen.

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Luckily, Gracia remembered that other divers had talked of an air pocket in a chamber nearby. He tugged Mascaro to it, and there they talked through their options.

Both knew they only had enough air for one of them to make it out.

"We decided I would stay and Guillem would go for help. He was skinnier than me and needed less air for breathing. I was also more experienced at breathing cave air, which has higher carbon dioxide levels," Gracia says.

They planned an alternative, longer route out on a map. Mascaro would have to travel along some of it without a guideline and could potentially get lost.

"It would have been like trying to drive a car in a very foggy night," Gracia says.

"Guillem was reluctant to leave me on my own but we knew it was our only chance."

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Once Mascaro had left, Gracia took off most of his equipment and explored the chamber. It was about 80m (260ft) long and 20m wide, with a gap of 12m between the water and the ceiling.

He realised the water at the surface of the lake was drinkable. He also discovered a large flat rock and pulled himself out of the water to rest.

Gracia decided he would have to manage without light. Two of his three torches no longer worked and the third was low on battery.

"I only turned it on when I went to pee or to climb down to get fresh water," he says.

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There was little he could do now but wait, in complete darkness, and hope to be rescued.

"I asked myself why this had happened to me now after so many years of diving," Gracia says.

"But I was hopeful during the first seven or eight hours as I thought Guillem would make it out. As time passed, though, I started to lose hope. I thought, 'Guillem has got lost and died and no-one knows I am down here.'"

Gracia began to think about his loved ones above ground.

"I have two children, a son of 15 and a daughter of nine. I thought about how they were too young to lose their father and what would happen to them," he says.

Although he managed to remain calm, he began experiencing the effects of breathing in high levels of carbon dioxide. While the air we breathe above ground is 0.04% carbon dioxide, in the cave the level was as high as 5%.

"I had a headache and although I was exhausted through lack of oxygen it was impossible to sleep. My brain was whirring," he says.

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His mind began playing tricks on him.

"I got the feeling there were lights in the lake and I heard the sound of bubbles of a diver emerging.

"But when I turned my head I saw nothing. It was a hallucination."

Gracia lost track of time but after what felt like days he heard a loud noise above him. He realised Mascaro must have made it out.

"I thought at first I could hear the sound of tanks being filled with air for the rescue team. Later I realised they must be trying to drill through the rock.

"I was really happy as I realised they were looking for me."

But then the noises stopped and Gracia faced his darkest moment.

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"I thought about how I could die in the way divers most fear - without food or air," he says.

"My light was almost spent and I knew I wouldn't be able to climb down to get water in the dark.

"I decided to swim across to where I left my gear and get a knife. I wanted to have it as a last resort if I needed to choose whether to die quickly or slowly."

Shortly after this Gracia thought he heard the sound of bubbles again.

"I looked and saw a diver's light that seemed to be getting brighter and brighter," he says.

"I thought it was another hallucination but then I realised it was real and I saw a helmet emerging."

It was Bernat Clamor, an old friend.

"I jumped in to the water and embraced him. He was asking me how I was, and telling me that he had been afraid I had died."

No oxygen

Gracia learnt that Mascaro had managed to raise the alarm but that rescue efforts had been hampered by poor visibility.

Rescuers had then tried to drill a hole through the rocks to supply him with food and water - which explained the noises he had heard - but this attempt had also failed. Finally, Clamor and fellow diver John Freddy had made it through, after waiting a day for the silt to settle.

Gracia's ordeal was still not over. Clamor had to leave him to contact the rescue team, but gave him some glucose pouches to boost his energy levels.

"It would take eight more hours to get me out of that cave, but they were eight happy hours," Gracia says.

Gracia was given air enriched with oxygen to breathe and slowly guided to the entrance. He emerged late on Monday 17 April, 60 hours after he went in. Guillem Mascaro was there to meet him.

"We embraced but didn't have time to speak as they took me off in an ambulance.

"It hit me physically as soon as I left the water. My temperature was 32C so I was at risk of hypothermia. I was given pure oxygen to breathe overnight."

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Gracia had kept his emotions in check the whole way through his experience.

"You have to be able to control your emotions with diving. But the next day I watched coverage of the big rescue operation on TV and I cried. I was so thankful."

Gracia has not turned his back on diving, despite his narrow escape. A month after the incident he went back to Sa Piqueta. He has even visited the chamber where he was stuck for so long.

"I don't hold any grudges against that cave - it's not like it's the cave's fault," he says.

Gracia says he will continue mapping Mallorca's underwater heritage.

"My children don't like it much but they don't tell me not to do it," he says.

"I have spent 24 years exploring underground. It's in my blood."

Listen toXisco Garcia talking to Anu Anand on Outlook, on the BBC World Service

See also:The cave divers who went back for their friends

No oxygen



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