Originally started as a grassroots event on San Juan Island, Summer Meltdown is now a full-fledged music festival a bit closer to Seattle. This year, the event goes down in Sky Meadows Park in Snohomish, a riverfront property that the organizers note is full of "forested camping, beaches, swimming holes, and stunning views." Artists like Greensky Bluegrass, Lettuce, and Travis Thompson will headline the weekend lineup, rounded out by yoga and meditation workshops, plus a Saturday night forest creature costume party.