Yosemite - Robert DeNichilo

Horsetail Falls

It may look like lava gushing from Horsetail Fall at Yosemite National Park. But that's just an illusion.

In reality, this phenomenon, known as "firefall," happens when the sun's angle "sets the waterfall ablaze with reds and oranges, like a fire was falling down the cliffs on the shoulder of El Capitan,"