Flash floods trapped nearly a dozen hikers Monday in Bryce Canyon National Park.

The water stranded 11 adults in four groups of hikers, the Garfield County Sheriff's Office said.

Two of the hikers showed signs of hypothermia and were taken to a hospital, according to the Salt Lake Tribune. The other nine were released.

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Trails affected by the floods included Fairyland Loop, Navajo Loop, Queen’s Garden and Peek-a-Boo Loop, the Tribune said.

In addition to Garfield County Search and Rescue team members and sheriff’s deputies, national park rangers helped with the rescue.

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Bryce Canyon National Park, in southwestern Utah, is known for its towering rock formations known as hoodoos.