SEE: Amazing images of rare firefall in Yosemite

When the sun hits Horsetail Fall waterfall in Yosemite Park just right, it turns the waterfall into a glowing orange "firefall" that attracts photographers from all over the world.

The "firefall" only happens in mid-to-late February when the sun sets to the west of the waterfall at a certain angle, and several conditions have to be perfect for the sun to reflect off the waterfall in a fiery color.

“I know photographers who have been coming out here for 11 years and have only seen it twice,” Sangeeta Dey, one of the photographers who captured the "firefall," told ABC News today.

 

"I Lava You" This is the timelapse of my heart shape Horsetail Fall from last Friday. Did you catch it? If Horsetail Fall is flowing in February and the weather conditions are just right, the setting sun illuminates the waterfall, making it glow orange and red. Cherry on top, while the mist was formed and a heart shape form #special_shots #worldplaces #theworldshotz #Big_shotz #m43 #GetOlympus #OlympusOMD #OlympusInspired #OMD #Olympus #hot_shotz #IG_Exquisite #special_shots #igsuper_shotz #igbest_shotz #igglobalclub #igsccities #special_shots #instagood #featuremeinstagood #worldbestshot_ig #neverstopexploring #abc7now #loves #valentinesday #firefalls #yosemitenation #yosemite #yosemiteconservancy @yourtake #ktvu #ktvu2 #horsetailfalls

A video posted by Nam Ing (@naminou) on

Feb 18, 2016 at 4:23pm PST

There also needs to be a lot of snow on the ground, and temperatures need to be on the warmer side for the sun to reflect off the waterfall, National Park Ranger Scott Gediman told ABC News.

The past four years have not had a "firefall" due to a drought, Gediman said, and even when the sun does hit the waterfall, it does not always create the “really vivid orange” color that has been present this year, "making it one of the best years in a while," according to Gediman.

The "firefall" usually begins around 5:30 p.m., said Dey, who was camped out at the waterfall by 2 p.m. on Monday to make sure she would have a good spot to take photos. “There were people already there at 7 and 8 in the morning,” she said.

More than 200 people gathered at the waterfall for the peak moment on Monday, Dey added.

Hundreds of people come every day hoping to see the "firefall" happen, according to Gediman. The natural phenomena occurs for approximately 10 days in February, but it’s “a little different every day,” and “some days it might not happen at all,” Gediman explained, adding that the peak time for the "firefall" is now.