Happier trails. That’s the plan at Acadia National Park.Saturday is National Trails Day.An open house starts things off at 8:00 a.m. at the trail workshop at park headquarters.At 9:00 a.m., volunteers will meet at Frazer Point picnic area to work on the Schoodic trails.If you’d like to pitch in, you’re advised to dress for the weather. Wear sturdy shoes, and bring gloves, bug repellant and water.It’s recommended that you register. You can do that by calling Terry Begley or Stephanie Clement at 288-3340.There are guided hikes planned. The hikes are limited to twenty people per group.