Something's stirring in the snow-dappled waters of Alaska's Chena River.
A video posted on Facebook last week by the Bureau of Land Management - Alaska shows a "strange thing" swimming at the surface of the water. It moves sinuously with an icy covering on the back. Is it a creature or an object? The Bureau isn't saying, instead commenting that "we honestly don't know exactly what it is."
"Our employees did not investigate. It's kind of far out in the middle of the river. Video was taken right by our BLM Fairbanks District Office facing downstream," the BLM writes on Facebook.
The bureau's Facebook fans are only too happy to speculate on what the thing might be. So far, suggestions include a tree snag with water flowing by, a sturgeon, a dragon, a beaver pulling a piece of wood, a rope, an old fishing net or the Loch Ness monster on vacation.
BLM employees Craig McCaa and Ryan Delaney took the video footage and added a spooky soundtrack to highlight the mysterious nature of the sighting.
Delaney offers up his own tongue-in-cheek assessment on Facebook, suggesting it might be a river monster named the Chena Chomper. He also acknowledges it might just be some debris caught in the current.
The Loch Ness monster comes to mind anytime something weird and unexplained stirs in a body of water, but the Alaskan object doesn't appear to be anywhere close to the alleged size of the mythical Scottish beast. We may never know what the BLM really saw in the river that day, but it is fun to speculate. Especially on Halloween.