Sunlight hits the Horesetail Fall, turning it into a "Firefall", at Yoesemite National Park, California, US, February 18, 2019, in this photo taken from social media. (Photos: VCG)

Sunlight hits the Horesetail Fall, turning it into a "Firefall", at Yoesemite National Park, California, US, February 17, 2019, in this photo taken from social media.

Sunlight hits the Horesetail Fall, turning it into a "Firefall", at Yoesemite National Park, California, US, February 17, 2019, in this photo taken from social media.

Sunlight hits the Horesetail Fall, turning it into a "Firefall", at Yoesemite National Park, California, US, February 17, 2019, in this photo taken from social media.

Sunlight hits the Horesetail Fall, turning it into a "Firefall", at Yoesemite National Park, California, US, February 17, 2019, in this photo taken from social media.