It wasn’t waves crashing into the shore in this viral video from NC’s Outer Banks

DUCK, N.C. (News and Observer) - A video of a massive Curritick Sound ice sheet pushing ashore on the Outer Banks has gone viral.

Brandon Bancroft, a chef at The Blue Point restaurant in Duck, posted the footage about 4:30 p.m. Wednesday as a Facebook live video on his own account, where it has been viewed more than 286,000 times and shared more than 4,500 times.

"I posted it on Facebook, and it had like 10,000 views in the first 20 minutes," Bancroft said.

Neuse River Bait & Tackle also shared the video to its Facebook page, where it was viewed nearly 400,000 times and shared nearly 10,000 times by Thursday afternoon.

Bancroft, from Kill Devil Hills, said he and coworkers noticed a piling at the dock behind the restaurant moving in what normally would be water in the sound.

"We looked outside and saw the one pole cutting through the ice," Bancroft said in an interview Thursday. "We wondered how it was happening, so we ran out to check it out."

What they discovered were massive sheets of ice moving toward either shore during a tidal change.

"The whole sound was frozen over, and the very center cracked, and it split like a river in the middle," Bancroft said.

Ten to 15 minutes after they spotted the unusual event, the ice stopped moving.

Friends who were with Bancroft also documented what they saw.

The video drew inquiries from national media groups interested in using it, Bancroft said.