An Alaska Bureau of Land Management employee in Fairbanks was checking out ice on the Chena River Wednesday when he saw and recorded this “strange thing” that was moving up the river.

The video, titled Chena River Ice Monster, was later posted onto Facebook where it instantly went viral.

“Our employees did not investigate,” the BLM wrote on its Facebook page. “It’s kind of far out in the middle of the river. Video was taken right by our BLM Fairbanks District Office facing downstream.

We’re not sure what it is. We’re letting you all be the judge.

Most YouTube commenters are saying it’s a sturgeon caught in a net, or maybe a beaver pulling wood (heh). The newscaster in the video below seems to think it’s a “cold-blooded alligator,” which would be a first, I think…

What do YOU think? Ice monster? or something more mundane?