Congaree Website said" The Synchronous Fireflies became active on the evening of May 16. The fireflies were once again very active last night (Saturday, May 19) from around 8:30pm till around 9:30pm. Many visitors came out to see the event last night, with cars parked along the road all the way to Longleaf Campground (about a 2-mile roundtrip walk to the Fireflies Trail). We are expecting that the crowd sizes will be the same or larger over the next week or two as more and more people find out about this unique event."
Im driving up today. Bring a case of DEET.
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It's about a 2 weeks window of time and I believe it started last week. Get to park before dark and park then follow the signs. Bring a chair. Check website for further details.
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