Transcript for Missing soccer team found alive in a cave in Thailand after 10 days
How my of you? 13. 1 Reporter: Images everyone hobut no one ted to see. 12 boys and their soccer coach found alive inside this cave in Thailand. We're coming. It's okay many people are coming. We are the first. Many people come. Rr: The boys, ranging GE F 11 to 16, been feared dead after they W mig withheir 25-year- soccer coach the Tham luang nangnon cave in the mountains of norern Thailand. W the world watched in disbelief as group, S in their soccer Jerseys, huddled together twoiles inside the ves. Someone in the group as how long tve been down there. You have been here ten days. Ten days. You are very str very strong. Reporter: The sound oer and thrkness of the video an indication of jus how far and how deep into the Earth the team of English divers had to go to findthem. Those divers reassuri them that more help is on the way. We'reming. We're coming. Navy S.E.A.L.S are coming with food and doctor and everything. We're very happy. We are happy too. Yes. Ank you so much. Reporter:he team is lived to have entered the cave on June 23rd, when one boy missis birthday the next day, the alarmas raised. The team's abandoned bikes, helmets, and cs then found outside the cave entrance. And it' more of a labyrinth than cave. Mis ossageways and tunnels runnderground that can fl up to 20 feet in heavy downforz. Thteam's coach, who previously posthese images of his team ocial media, would often bring the team here for excursions. It's believed theroup crawl through a narrow channel with the cave that then became flooded in a sudden heavy downpour. The water no the flood water is getting higher and higher. Reporter: A sh and rescue was immediately launched. Over 1,000 people involved in the round-the-clock effort from all four corners oe Earth. Youe U.S. Here. We have Australians here, Chinese, the British divers. Reporter: Rescue teams drilling holes using ultrason sensors, dropping map and car packages tgh small crevices in the he that the tm was alive. Ininde the cave rescuers squeezed through tight ssages. Experts worked oveground too as every possibility was explored in this massive operation. All ove these mountains small groups of scouts like these have been sent ahead to find opening to the C from above because the been so badly flooded down below. T's too deep. Reporter: It's too deep for you to find -- Reporter: This geologist told me his team can scan 0 yards down into the Earth, looking gaps to knock through new entrances. And a natlooked on. The boys' parents prayed at T mouth of the cave. This mother calling out, "My son,e out. I'm waiting for youhere." Rescue divers pulling themselves along ropesp inside, fighting against powerful currents.the plan was to be able to R this cavern, which rescuers believed to be above their level and where they hoped team had sought GE. It turned out they were another 400 meters further INT the cave netw That's ready to go in. Reporter: Ben was one of th rescue divers.'s a cave explorer who's been LI in Thailand for 18 years. What's it like in the cave? The first days was very hard. I verye hope in getting through because if was raining a lot and the outflow was very hard. Really pulling hand over hand. And it was like diving in a cafe latte. I had no hope I making it that far. But then as they installed more pumps,ater down, the rain got a LE bit less, the visibility got better, and actually today the visibility S -- yould almost drink the ter. Reporter: Cave diving in a place like this is a daunting task. Sip filled with water. You have to dive down and come up and then you're back to rock climbing really over huge hills and -- so it T about an hour and a half to tw hours dending on the amount O gear you to drag behind you. And then the diving starts. Up, wn, up, down. H. So the water is about 21 degrees ces in the chamber itself it's nearly 0 fahrenheit, which doesn'ake itasy. Reporter: Then he saw a hopeful si writing on the wall of of thepassageways, which says dicated that he and the other rescueere goinge right direction. I'd like to believe it's the kids' writing because it looked quite fresh andhere's a bit O a traditi going on with youngsterso -- like football clubs Ano on, to gon the see how far you gon and you write your name oe wall. Orter: Emergency T from around the world S up a staging area in one of the cave's chambers, bringing I lights, medical supplies, and oxygen nks. As long as they have water andhey don't G hypothmia, then options are qui high. Reporter: The Thai provincial governor nuanced that miraculous news. All boys and their coach had en found alive. Cheers and applause ] It's incredible news. Thailand's prayers have paid off. Families gathered outsidehe cave were overjoyed. Whatdition are they in? Hey're very weak. Ver weak. Yeah, butre a alive. A not in life-threatening conditions. No. Sohey're going to be okay. No gutees, but yes. Theiggest challenge actually rig now is simply thefact that they have been without food for nine days and if they suddenly wereiven a bunch of foodnd started to eat it right now that couldctually kill them. Reporter: A medic will spend the GHT inside the cave nourishment, helping them to cover and assessing their stngth to make journey out. Fm our point of view, you know, we report onad stories. We Nev know what to expect. This is incredible. Despite the elation of discovering them alive, it is tempered with the knowledge that tomorrow the treacherous process of getting them out Wil begin. Much of the tunnel is still submerged, andhe steepffs might be T much for weakened schoolboys tohandle. They are I place in the cave that is safe fro further flooding, then the safest option is T just Kee supplying them in the cave with food the ability to purify water. If there that they're in is not safe, if the rains come and the waters up, thenhe issue that they'll be facing is the fact that it is N -- the only real option W be to dive them T. And that is both technical very challenging. It's also incredibly risky. We areng to come together to Fure out what the best possible solution is and kind of be able to get the kids out safend as quickly as possible. Reporter: Time is not on their side. Heavy rains are expected again any now. Once the heavy rain starts the E system W fill up and the flow is too hard, there's no you'll get . So now eyre I between the two rains. Soe got Rea lucky now THA we progresses much. Reporter: Despite the hopeful scene outside the entrance, happy ending to this story has not yet been itten. The group must make itout. And that journey will be a more difficult than the one they took in for "Tline" I'm James main Chang rai in Thailand. Xt, she's a ferrari,
This transcript has been automatically generated and may not be 100% accurate.