It’s twilight on a warm May evening at the Congaree National Park in Hopkins, South Carolina. A wooden boardwalk weaves through cypress knees, and towering loblolly pines. A viewing platform holds the ...

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.

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 ...

Deep in the pitch-black woodlands of Congaree National Park lives a mysterious insect that draws thousands of onlookers each year. The forest is dead quiet at night, aside from the chirping of ...

Park staff and community partners are gearing up for a celebration of the annual synchronous fireflies which will soon appear at Congaree National Park. The synchronous fireflies are a rare phenomenon ...

Every year for two weeks between mid-May and mid-June, Congaree National Park in South Carolina is home to a fairy-tale-like display of flashing lights. These rhythmic performances happen all because ...

For a few weeks in late spring, thousands of fireflies emerge at the Congaree National Park in South Carolina to blink in synchrony. Scientists... It’s twilight on a warm May evening at the Congaree ...

Fireflies at Congaree National Park flash in unision in this file photo from 2016. Only a few lucky winners get a chance to see the natural light show each year, which is currently protected by the ...