A clip from a Japanese television show has emerged online and the content is utterly terrifying.
The 14-second-video, shows a large grizzly bear pushing a see-through cube containing a woman.
The woman is thrown about inside and can be heard screaming in panic while rolling onto her back and tucking her legs up into her body.
Meanwhile the bear circles the cube and sets about looking for a weak point in the hope of gaining access.
The woman inside captures her perspective on a hand-held camera and films the bear's attack.
The video concludes with the grizzly sitting down and pushing the box with its large paws - shaking it violently.
The clip is believed to be a preview for the programme Sekai No Hatte Madde Itte Q! and features a bear called Dakota. And the frightening game, which merely appears to test a competitor's nerve, is entitled the Predator Shield.