Synchronous Fireflies at Great Smoky Mountains National Park

“Every year, in late May or early June, hundreds of visitors gather near Elkmont to watch Photinus carolinus, a firefly species known for its synchronous flashing. The park limits access to the Elkmont area during the eight-day period of predicted peak firefly activity to ease traffic, keep visitors safe and protect the fireflies during their mating season.   Every year I forget to apply for the lottery to witness this natural phenomenon. I can’t imagine the sense of wonder one feels when witnessing this many fireflies at once 🥹”