Twelve miles south of Rockland, this once-private island, bridged to the mainland by a causeway, become a preserve of the essential Maine Coast Heritage Trust in 2020. A flat gravel road (no cars, though) of ¾ of a mile bisects the island, with two miles of spur trails leading off to great pebble beaches, old granite quarries, and picnic sites in quiet spruce woods. I’ve spotted ospreys circling overhead and seals while clambering on the granite ledges. A quintessential little Maine island, a bit off the usual tourist track. Parking is near the Craignair Inn on the mainland side of the causeway (which has a nice bar for after your hike).