LOS ANGELES (InsideEdition.com) — A man’s GoPro camera captured horrifying video of his friend suddenly going over a cliff while riding a motorcycle.

“That split second, when I saw his body fly over the trees, I thought he was dead,” David Park told Inside Edition.

Park’s camera, mounted on his helmet, shows him stopping on a winding road in Southern California’s Angeles National Forest and scurrying down a hillside to help his friend.

“Just don’t move, OK?” he tells his stunned friend, who is conscious and entangled in heavy brush.

The crash victim suffered a broken shoulder and was airlifted via helicopter to a nearby hospital. He said his back wheel slipped, and he lost control of his bike.

“I’m just shocked how someone could survive that and walk away,” Park said.Watch Inside Edition weeknights at 7:30pm on NBC4.