Horsetail Fall, located in Yosemite National Park in California, is a seasonal waterfall that flows in the winter and early spring.

[1] If Horsetail Fall is flowing in February and the weather conditions are just right, the setting sun illuminates the waterfall, making it glow orange and red.

It can be seen and photographed from a small clearing close to the picnic area on the north road leading out of Yosemite Valley east of El Capitan.

[7][8] The popularity of the phenomenon to photographers has resulted in large congregations of people, which caused damage to sensitive vegetation, and led to the National Park Service closing two of the three best viewing sites in 2020.

[7] On February 22, 2025, Yosemite employees hung an upside-down U.S. flag next to Horsetail Fall to protest the recent mass firing of National Park Service staff by the Trump administration.