Synchronous fireflies last night

This is 30 5-second exposures from last night, combined into one image. I was in the Great Smoky Mountains National Park, and it was the largest swarm of synchronous fireflies I’ve had the pleasure of observing. If you’re in the region and want to see some for yourself, just try to find a meadow that doesn’t get mowed too often, and doesn’t get sprayed with pesticides ever, and hang out there starting around the end of twilight.