When sunlight hits a tiny waterfall on the eastern side of Yosemite National Park’s El Capitan, it glows a gorgeous orange or red. For two weeks of the year, Horsetail Fall becomes firefall. The ...

This week, weather conditions at Yosemite were perfect for the annual “firefall”—when the sun strikes the park’s infamous Horsetail Falls at just such an angle to make it look as though the cascading ...