ROCK SPRINGS – Celebrate the first official day of summer on Friday by attending the Springland Splash in Rock Springs. The event, which will be held at Springland Park on Jackson Street behind the YWCA, is free for the whole family.The pool will be open from 5:30 to 8 pm, with hot dogs and beverages for all participants. Children 50 inches and under must be accompanied by a swimming adult. This is one of many free activities sponsored by the Parks & Recreation Department this summer.