>> UPDATE: 1 killed, 4 hurt in collapse at Washington's Big Four Ice Caves

In the video, people walk out of the cave after the collapse; one shaking his head as others observed the fallen ice.

"You could [have been] killed," a woman either shooting or near the camera said.

Many signs around the cave tells hikers to not go inside it.

KIRO 7 is reaching out to U.S. Forest Service officials, who say they have not heard of the collapse.

They will go out to see it Wednesday.

Watch the video (warning graphic language) on YouTube here.