Dramatic video has emerged of a Nevada man being plucked by helicopter rescuers from a rock surrounded by swift-moving water above a nearly 50-foot waterfall in California. California Highway Patrol Officer David White said Tuesday that 25-year-old Kalani Tuiono escaped from the frigid, snowmelt-choked Yuba River with minor scratches and scrapes on Saturday, an outcome that amazed rescuers. Dramatic video shows Tuiono perched on a lone rock surrounded by rushing water, with the waterfall just below. Steep rock frames the river. White says he was caught by the undertow and swept a mile downstream from Emerald Pools, a picturesque swimming hole known for its colorful water. Auburn, California-based rescuers maneuvered above the falls, dropped down to him in a rescue basket and carried him to safety.