Visitors flock to Yosemite for firefall light show despite heavy snow

Sunset phenomenon at national park's Horsetail waterfall still drew large crowds even with freezing temperatures

Heavy snow did not deter visitors from flocking to Yosemite in recent days, in hopes of seeing the park's spectacular natural light show.

Firefall occurs each year in February during sunset when the light hits Horsetail Fall in such a way that, for a brief period, the waterfall appears illuminated by lava. In recent years, the phenomenon has drawn large crowds - and lots of photographers.