The Blue Hill Heritage Trust is leading a hike on Dorr Mountain in Acadia National Park on Monday, May 23. The advanced level hike is 3.8 miles. The trip will depart from the trust office at 8:30 am and return by 2:30 pm. Hikers need to wear sturdy shoes, bring a lunch, water, hat and a daypack. Space is limited. Call 374-5118 or email email@example.com to register.