Yosemite National Park’s Horsetail Fall is fire. Or at least that’s what it looks like. Visitors to the landmark were treated to a rare phenomenon when the reflection of the sun on the falling water creates what's known as a "firefall." It happens a few times each February when the sun is in the right position. The water then looks like flames. Visitor Jay Huang caught the amazing sight on video and says "This was my first time to capture the complete firefall effects in the last 30 minutes of sunset without any obstruction from clouds, even though I had photographed the firefall multiple times over the last dozen years.” Now you know when to visit to see the spectacle. See the video below...