It may look stunningly scenic at this island outpost on a sunny winter's day, but there are many challenges to face when you live thirteen miles out in the cold North Atlantic. Like cutting your way into your house with an ax. That's how thick the ice gets at this twenty-foot tower, according to one of the more recent residents of the keeper's house. In this community of 1,235 midcoast Mainers, the town manager is also the lightkeeper and thus resident of this 1857 home. Ice was just one problem the former town official faced when she assumed her post a few years back.What took more getting used to was the foghorn. "I thought I was being attacked by God knows what," she told the Portland Press Herald. The light here was built shortly before the Civil War under the order of President Andrew Jackson to protect the western end of the island's famous channel. The salty thoroughfare was essential for passenger vessels, for fishermen, and for the merchant ships taking granite out to the world. The stone went into the construction of all sorts of United States landmarks, from the Brooklyn Bridge to the Washington Monument. In fact, if you live on the East Coast, you've almost certainly walked on granite that came from this eight-mile isle, kept safe by generations of lightkeepers. Send us a note if you can identify this light and its landmass.