@dailymail: A stunning 'firefall' wowed visitors at Yosemite National Park, as water flowing off Horsetail Falls perfectly caught the light of the setting sun, leaving it glowing red and resembling a stream of flames flowing off the cliff. The natural phenomenon occurs at the park only on certain days towards the end of February when the setting sun back-lights the waterfall. It has become such a popular event that park officials had to moderate how many people will be allowed into the park. #nature #naturalwonders #yosemite #firefall