Scary moment for professional skier George McQuinn who was knocked unconscious after a brutal crash during the FIS Freestyle World Cup event in Deer Valley Utah on Thursday.
But thankfully, he's okay.
The terrifying incident was caught on video ... showing the Team USA skier taking a nasty spill on the last jump of the course, smacking the back of his head as he took off.
McQuinn is immediately knocked out cold from the blow to his head, and you see his body go limp, as he then slides down the mountain, face first.