About two dozen trapped in Kentucky cave
Hidden River Cave and American Cave Museum (Facebook)

Nearly two dozen people were trapped in a Kentucky cave on Thursday due to flash flooding, according to police and local media.

Local broadcaster WAVE reported that people were visiting the Hidden River Cave and American Cave Museum in the small city of Horse Cave when flooding trapped them inside.

Kentucky State Police spokesman Trooper Barry Eaton said 21 people were trapped due to the rising waters, but declined to provide further information and forwarded additional questions to area emergency officials.

Hart County Emergency Management Agency Director Kerry McDaniel told WAVE that the people ventured as many as 4 miles (6.4 km) into the cave, but that they were accompanied by experienced guides and had action plans in case of rising waters.

WAVE said that four people have been able to exit the cave safely.

The National Weather Service said Doppler radar indicted heavy rain in the area due to thunderstorms. The Service issued flood advisories for parts of the county and singled out Horse Cave as a place that would experience flooding.

(Reporting by Steve Bittenbender in Louisville, Kentucky; Writing and additional reporting by Curtis Skinner; Editing by Marguerita Choy)