Videos from Yosemite National Park show the iconic "Firefall" phenomenon glowing at Horsetail Fall inside the park.

This lava-like visual is only seen when the conditions are perfect, and the sunset aligns with the waterfall just right.

Yosemite’s Firefall! For just a few days each year, the setting sun perfectly aligns with Horsetail Fall, making it glow like a river of fire cascading down the cliffs. This rare and mesmerizing event ...

Two weather factors need to come together perfectly for the firefall to ignite. First, storms need to deliver rain and mountain snow to the Yosemite area leading up to Feb. 21 to feed Horsetail ...

The mountainside of Yosemite National Park will appear to catch fire later this month as the viral firefall ignites in one of California's most popular tourist destinations. Photographers from around ...

This year, the chaos surrounding Firefall — and resulting damage to the area of the park where visitors gather to behold it — has some conservation-minded Yosemite tour guides opting out ...

Tourists refer to the natural phenomenon as the “firefall,” although park officials reserve that term for the days when people used to push bonfires off Glacier Point. According to Yosemite ...

Hundreds of visitors gathered in Yosemite National Park to gaze at the "Firefall," which occurs when the setting sun reflects ...