My son Logan, 14 years old, came out to Isle Royale with me one day recently on a day that I was working as captain of the Queen IV. By boat, we went out to an island near the northeast tip of the main island, North Government Island. Logan and I both were trying to walk along the short cliffs on the north side of the outer island that afternoon. Our progress was finally stopped at this particular cliff, the one in the photo, which ran out of an edge to get a step on. Around the corner of the cliff face on the left side of the photo, the cliff was too sheer. This is basalt rock, some of the oldest exposed rock on planet earth. These ancient lava flows form the ridges that you see all around Isle Royale. They're fun to climb on, too.