Hidden River Cave, where more than a dozen people were trapped by rising water Thursday. (Austin Anthony/Daily News via AP)
A group of college students had to be rescued Thursday from a Kentucky cave after heavy rains in the area caused severe flash flooding.
The Hart County Emergency Management told Fox affiliate WDRB-TV 19 people were stuck inside the Hidden River Cave located in Horse Cave, Ky., which is part of the American Cave Museum.
The 19 people who escaped more than six hours after entering Hidden River Cave included students from Clemson University, four tour guides and two police officers who became trapped when they tried to rescue the group, Kentucky State Police Trooper B.J. Eaton said in a press release.
There was no communication between the stranded cavers and the more than 150 emergency personnel at the scene.
Authorities said they didn't know exactly where the missing cavers were underground, and the only light the group had came from headlamps they wore.
The cavers became stranded in a portion of the cave known as "The Attic," which has a higher ceiling, Eaton said.
The group stayed there until deciding to find their way out as the water continued to rise, according to Eaton.
"When they came out of the cave, they were neck-deep in water," Hart County Emergency Management Director Kerry McDaniel told the Associated Press.
"The waters were continuing to rise under the flash flood," he added. "They saw an opportunity to exit the cave, so they took the chance."
McDaniel said there's only one way in and out of the cave located in south-central Kentucky's karst region, where many of state's longest and deepest caves run underground.
The Clemson students had planned a five-hour trip exploring the cave as part of their geology studies when torrential rains hit the region after they entered, McDaniel said.
The group went into the cave about 10 a.m. CDT Thursday and walked out on their own about 4:30 p.m. They were checked for hypothermia but declined further medical attention, McDaniel said.
Four other people were able to escape earlier, Horse Cave Fire Chief Donnie Parker said. He didn't have details about how they got out.
Two Horse Cave police officers who became trapped had entered the cave about 3 p.m. in an effort to make contact with the stranded group, authorities said. They were met by the four people who had managed to escape.
"We looked at this from the beginning and hoped it was a search rather than a recovery operation," McDaniel said.
The Associated Press contributed to this report.
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