Lower Calf Creek Falls, Utah – A group of unsuspecting swimmers had a frightening experience when large rocks suddenly fell off a cliff near them.

The video shows the boulders crashing down extremely close to people swimming under the waterfall. No one was injured.

The Bureau of Land Management – Utah issued a warning, saying, “Look up!”

They stated that the rocks fell without warning and narrowly missed the swimmers at Lower Calf Creek Falls.

“Fortunately, no one was harmed in this incident,” the agency said, “but there have been injuries in the past.”

Podcast: Play in new window | Download