A rare double rainbow graced the Hukou Waterfall this week, transforming the Yellow River landmark into a viral winter wonder. The natural phenomenon occurred when sunlight refracted through mist from the thunderous cascade, creating two concentric arcs above the ice-fringed gorge.
Nature's Light Show
Park staff explained that winter's combination of abundant water vapor and low-angle sunlight increases rainbow frequency at the waterfall, though dual formations remain exceptional. The spectacle coincided with the formation of crystalline ice structures along the riverbanks, as temperatures plunged to seasonal lows.
Seasonal Spectacle
Straddling Shanxi and Shaanxi provinces, the 30-meter-tall Hukou Waterfall experiences increased winter visitors drawn to its frozen fringe effects. The Yellow River's 'kettle spout' narrows to 30 meters during dry seasons, amplifying water velocity and mist production that enables such optical displays.
