On weekdays, Tim Henderson is a computer repairman. Come the weekend, he’s a Waldron’s Warrior, part of an army of volunteers battling vandalism of Acadia hiking trails, and teaching people about the park’s unique stone trail markers known as Bates cairns. Officially, Ellen Dohmen chairs the Bar Harbor appeals board and serves on the advisory … Continue reading Waldron’s Warriors: Foot soldiers for Acadia hiking trails