A rare trick of sunset light turns this Yosemite waterfall into molten lava
Each February, Horsetail Fall in Yosemite National Park transforms into a glowing orange ribbon of light as the setting sun hits the water at a precise angle, mimicking a stream of flowing lava.
For a few fleeting weeks in late February, the setting sun aligns perfectly with Horsetail Fall to create the famous Firefall effect. This visual phenomenon only occurs when clear skies allow sunlight to strike the granite cliff, illuminating the water against the dark shadows of El Capitan.
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