Every February, something magical happens deep in Yosemite National Park. A waterfall called Horsetail Fall starts to glow, looking like fire or molten lava falling down a cliff. The phenomenon, known as the firefall, lasts only a few minutes. Each year in mid- to late February, if conditions line up just right, the setting sun hits the waterfall and lights it up in fiery shades of orange and red.This draws crowds, photographers, nature lovers and people who have waited years for this one chance. The Firefall is about that tiny window of natural beauty.

What makes the Horsetail Fall fire glow

Horsetail Fall is a slender ribbon of water that runs off El Capitan’s east side, and for most of the year, it’s pretty ordinary, quiet and hidden.As reported by Yosemite Mariposa County, in mid‑February, the angle of the setting sun changes. The light catches the falling water with flames of colour that spill down the rock in an intense orange and deep red. Sometimes it even looks like smoke.But it’s not fire at all. It’s pure and simple, light hitting water in a way that only happens for a few minutes each year. Photographers from all over the world gather along the valley floor.

Which conditions lead to the Firefall glow

The firefall doesn’t always happen, not even every year. There are specific weather conditions needed.

It just looks like a normal waterfall. Experts say it’s a fragile balance. A mix of weather, timing, and luck. Some years, people watch, and nothing happens. They return home disappointed. Others see it in all its blazing glory.

Science behind the glow

The Firefall works because of how light bends, called refraction. The sun sits low in the sky. In mid‑February, it hits the water at a rare angle where light scatters, colours shift, and what you see looks like fire.