The four-day Great South Bay Musical Festival is now fully underway along the water in Patchogue.

Thursday’s lineup was headlined by The Front Bottoms and Thrice on the main stage, with acts such as I IGNITE and GutterLIFE at the clamshell.

Scroll down for 30 photos from Benny Migliorino of Benny Migs Photo that come courtesy of the Great South Bay Music Festival organizers.

Click the 2, 3, 4 , 5 and 6 boxes to view them all!

Heading down?

Read this first: What to know for Great South Bay Music Fest 2018