Fill in the Blanks Exchange students rescuedOnline version Another BKK post story. by Tim Atkinson 1 science forest kilometres normally waterfall local exchange travel police team midnight soldiers students Wednesday trekking visitors male tourism especially missing Eleven American exchange who became lost in the jungle near Huay Tueng Thao reservoir in Chiang Mai on Wednesday were found by rescuers at around and led to safety . The rescue operation began shortly after 7pm on when one of the students used a mobile phone to call tourist police , said Col Supakon Rueansati , manager of the office for promotion of the reservoir , a popular recreation area for locals and visitors in Mae Rim district . A team consisting of , rescuers and staff of the Doi Suthep - Pui National Park , found the lost students at Pha Nok cliff , above Tat Mok , using the GPS location of the phone used to contact the police , he said . The rescue team had to on foot for 800m after travelling in a pickup truck with four - wheel drive for 4 to the nearest possible spot , he said . The students - one and 10 females , aged 18 - 22 years - gave a big round of applause when they saw the rescue arrive at the 80 - metre - high cliff and embraced them in appreciation , he said . Some cried with joy . The students told the rescuers they were here on a six - week programme with Chiang Mai University's faculty of . They hired a songthaew taxi from the university to Huay Tueng Thao and began into the jungle at 2pm , heading for Tat Mok waterfall . They became lost and then night fell . Stranded in the dark , they decided to call the for help . Fortunately for them , they were not out of range of mobile phone signals . The reservoir closes at 6pm and the cliff area where the students were found is not safe for visitors who are not familiar with the area , at night . They were told to stay put until they were rescued , Col Supakon said . The young Americans had entered the without informing the tourist relations staff at the reservoir office , which was why staff were not aware they were when they checked to ensure all had left when the reservoir was closed for the night , he said .
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