In a stunning display of magic straight out of the Hunger Games, a Yosemite National Park waterfall appears to catch on fire. It’s a natural quirk that occurs only a few days each year, when conditions are just right.

Horsetail Fall flows down the side of El Capitan, a 3,000-foot rock wall favored by base jumpers and thrill-seeking climbers. This year’s firefall was magnificent, drawing a crowd of thousands of photographers hoping for that perfect shot.

“In the over 20 years I have been photographing the firefall and leading workshops there in Yosemite, I have never seen a more spectacular one,” Michael Mariant, a California photographer, told the New York Times. Photographers camped out from 8 a.m. Saturday to stake out the best angle, photographer Vincent James wrote in an Instagram post. And they weren’t disappointed. “The orange glow on the falls was truly stunning to see in person,” he wrote.

But how does a waterfall catch fire? The first ingredient is sufficient water. For the falls to catch the light, they have to be gushing. And for that to happen, there has to have been enough accumulated snow and rainfall over the winter. For this reason, the firefall effect only occurs for a maximum of about 10 days per year, typically at the end of February when the water flow is strongest.

The second ingredient is a sunset — the redder the better. From the right angle, the waterfall will catch and reflect the sunset’s reds, oranges, and yellows, but only for a few minutes as the sun falls to the horizon.

In recent years California’s drought had dulled the firefalls. But this year’s giant El Niño has eased the drought and brought back the firefall, with a vengeance.

Got to watch this volcano blow it's top over the weekend. ----------------------- So the first thing that came to my mind about shooting Horse Tail Falls was "if everyone jumps off a bridge would you"? The reason is because while on a mad dash to shoot this after spending the day atop Upper Yosemite Falls (sorry, but no way I was waiting an entire day in Yosemite at one spot - when I spoke to a park ranger around 7:30am after shooting sunrise he mentioned people were already lined up...) I saw a relatively empty spot that had a few trees with orange leaves that I thought would be an amazing frame for the orange glow of the waterfall. However, because I spent absolutely zero time scouting locations, I decided to push on and look for what seemed to be a better view of the actual falls (a.k.a. where more photographers were). I ended up joining one of the larger groups of roughly 100+ people close to the El Cap picnic area. Although I didn't get a unique shot by any stretch of the imagination, the experience was still very cool, as it was surreal to see so many people, not just photographers, hoping to catch a glimpse of this rare occurrence. The joyous party-like atmosphere made it quite the experience and was nothing like I had seen before at a National Park. Even though I hate crowds, I am very glad people had such an interest in getting out and seeing Mother Nature at its finest, in one of the most stunning landscapes of our National Park systems! So yes, to answer the question - if everyone jumps off a bridge, then I may just do so too (one time at least) 😆. ----------------------------- #earthfocus #artofvisuals #welltraveled #welivetoexplore #instagoodmyphoto #ourplanetdaily #keepitwild #liveauthentic #theoutbound #earthpix #wonderful_places #travelawesome #rei1440project #teamcanon #rawcalifornia #canon_photos #in2nature #neverstopexploring #exploremore #huffpostgram #wildernessculture #letsgosomewhere #feedbacknation #nationalpark #exklusive_shot #wildcalifornia #liveoutdoors #canonfanphoto #horsetailfalls #firefall

A photo posted by Devon Spencer (@heyguystudios) on

Photos via David Welch