Efforts to locate the group were hampered by rising water levels and strong currents, and no contact was made for more than a week. The rescue effort expanded into a massive operation amid intense worldwide public interest. The rescue effort involved highlight ฟุตบอล than 10,000 people, including over 100 divers, many rescue workers, representatives from about 100 governmental agencies, 900 police officers and 2,000 soldiers, and required ten police helicopters, seven police ambulances, more than 700 diving cylinders, and the pumping of more than a billion litres of water out of the caves.
There was one fatality, Saman Kunan, a 37-year-old former Thai Navy SEAL who died of asphyxiation on 6 July while returning to a staging base in the cave after delivering supplies of air. Doi Nang Non, “Mountain of the Sleeping Lady”. When viewed from this angle, it is said to resemble a lady lying on her back. Tham Luang Nang Non is a karstic cave complex beneath Doi Nang Non, a mountain range on the border between Thailand and Myanmar. On Saturday 23 June 2018, a group of twelve boys aged between 11 and 17 from a local junior football team named the Wild Boars and their 25-year-old assistant coach, Ekkaphon Chanthawong, went missing after setting out to explore the cave. Nopparat dialed assistant coach Chanthawong, followed by a number of the boys in quick succession. Eventually, he reached Songpon Kanthawong, a 13-year-old member of the team who mentioned he was picked up after practice, and that the rest of the boys had gone exploring in the Tham Luang caves.
Celebrated his birthday while in the cave. The assistant coach and three of the boys had no nationality. Nopparat Khanthavong, the founder of the Wild Boars team, explained that they are from tribes in an area that extends across Thailand, Myanmar, Laos, and China. This region has no clear borders and people are not assigned passports.
British caver Vern Unsworth, who lives in Chiang Rai and has detailed knowledge of the cave complex, was scheduled to make a solo venture into the cave on 24 June when he received a call about the missing boys. Meanwhile, policemen with sniffer dogs searched the surface above for shaft openings that could provide alternative entrances to the cave system below. Drones and robots were also used in the search, but no technology existed to scan for people deep underground. BCRC divers Richard Stanton and John Volanthen advanced through the cave complex placing diving guidelines, supported by Thailand-based Belgian cave diver Ben Reymenants. The Thai, US, Australian and Chinese diving teams supported the BCRC divers began transporting diving bottles into the cave system and established an air supply storage area in Chamber 3. On 3 July the trapped group were joined by three Thai Navy SEALs who supported them until the rescue.
The SEALS included Thai Army doctor Lt. Pak Loharachun of the 3rd Medical Battalion, who had completed the Navy SEALs course. BCRC diver Jason Mallinson offered the boys and coach an opportunity to send messages to relatives by using his wet notes pad. Many of the notes said they were safe, reassured family members that everything was fine, and included words of love, reassurance and encouragement. A logistics camp was established at the cave entrance, which accommodated hundreds of volunteers and journalists in addition to the rescue workers. The site was divided into several zones: restricted areas for the Thai Navy SEALs, other military personnel, and civilian rescuers, an area for the relatives to give them privacy, and areas for the press and for the general public.