Watch: Yosemite waterfall turns molten orange
BBC World
February 23, 2026
AI-Generated Deep Dive Summary
The iconic Horsetail Fall in Yosemite National Park transforms into a stunning molten orange spectacle during mid to late February when the setting sun strikes the waterfall at just the right angle. This rare optical illusion creates the illusion of fiery lava cascading down El Capitan’s granite face. Known as the "firefall," this natural phenomenon occurs only under specific conditions: clear skies, a flowing waterfall, and precise sunlight angles.
The effect happens due to the interplay of light, water, and rock. When the sun sets, its golden rays refract through the mist from Horsetail Fall, creating vibrant colors that shift from orange to red. This phenomenon is fleeting, lasting only a few minutes each evening during its brief window in February. The National Park Service notes that even minor haze or overcast skies can significantly reduce the display, making clear weather critical for viewing.
This unique event draws visitors and photographers worldwide, offering a once-a-year chance to witness nature’s artistry up close. For those interested in natural wonders, this rare occurrence highlights the beauty of Yosemite’s dynamic landscapes and the importance of timing and conditions in experiencing its phenomena. The firefall serves as a reminder of how Earth’s lighting, geology, and weather can create unforgettable visual treats for those who observe them carefully.
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Originally published on BBC World on 2/23/2026