Bomoseen State Park covers 3,576 acres in the Taconic Mountains along the shores of Lake Bomoseen, the largest lake located entirely within Vermont. The Taconic region is known for its slate industry, and old quarry holes and colorful slate rubble piles remain in the park. The park is a great place for building sand castles, and it also offers a rentable open-air pavilion. Season runs from the Friday of Memorial Day weekend through Labor Day weekend.