Yosemite's firefall occurs almost every year around mid-February to the end of the month when the snowpack atop the park's El Capitan rock formation begins to melt and flow down the cliffside, forming a seasonal waterfall known as Horsetail Fall. As the meltwater plunges 1,500 feet to the ground, the setting sun throws its light against the falls. If the sky is clear and the sun is positioned precisely in the western sky, that setting sunlight paints the the water with fiery orange, yellow and pink light. It's a precise twilight magic trick that lasts only about 10 minutes a day under optimal conditions, even some haze or minor cloudiness can greatly diminish or eliminate the effect. https://www.livescience.com/64839-yosemite-firefall-returns.html ............................................................................................................................................................... #science #nature #outdoors #education #news