GATLINBURG, Tenn. (AP) — Great Smoky Mountains National Park has announced June 1-8 as the dates for its annual synchronous firefly viewing opportunity.

The Photinus carolinus is a unique firefly species that flashes synchronously. They draw thousands of visitors to the park each year. The firefly viewing event was canceled last year due to COVID-19, and this year vehicle passes will be limited to 100 per night for the eight nights of predicted peak firefly activity, according to the park. Attendance is limited in order to reduce traffic congestion and minimize the disturbance to these unique fireflies during their mating period.

A lottery for vehicle passes is online at The lottery opens on Friday morning and closes on Monday. Results will be available by May 7.

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