You may know the Sled Island music festival as a place to see a lot of non-mainstream musicians and up-and-coming bands. This year, they’ve added skateboarding to the mix. There will be a block party in the East Village on June 21st. This also happens to be Go Skateboarding Day! It’s shaping up to be a great event and runs from 4PM-10PM. Learn more on their Facebook Event Page.