Every year, starting around mid-May, a mesmerizing natural light show takes over Congaree National Park as synchronous fireflies flash in perfect harmony. This rare and breathtaking spectacle draws ...

It’s a natural event that only happens in the Smokies, and thousands of people enter a lottery each year to witness the magic ...

Great Smoky Mountains Great Smoky Mountains National Park will host its annual synchronous firefly viewing in 2026. Learn how ...

GATLINBURG, TN – They came out one by one and then all at once, swarming the underbrush and pooling in the hollows, blinking crazily like fiber optic filaments in a planetarium or outer space-themed ...

Where to see fireflies this early summer is drawing attention as nature’s light show returns across the country. This summer’s firefly displays bring out rare syncs and glowing swamps that turn quiet ...

It begins as random flashes of greenish-yellow light in the night. And then, slowly, something incredible unfolds. A rhythm of pulsating light illuminates Great Smoky Mountains National Park. The ...

May, a mesmerizing natural light show takes over Congaree National Park as synchronous fireflies flash in perfect harmony. This rare and breathtaking spectacle draws visitors from around the world, ...

Add Yahoo as a preferred source to see more of our stories on Google. A spectacular natural phenomenon is set to light up two of America’s most beloved national parks this spring and summer.