Any vehicle with a Maine license plate was allowed free entry to any State Park, with a few exceptions. Visitors at Camden Hills State Park took advantage of the opportunity.
"We're just hanging out, grilling, on Fathers' Day," said Matt Davis of Lewiston. "We're gonna go up Mount Battie for the afternoon. Family, friends, good times."
This annual event encourages residents to check out State Parks, while thanking them for their support of the areas.