At first Luke thought it a natural outcrop of rock. They had seen plenty of boulders and even cliff faces on the first day of the hike, which suddenly reared up from the green earth. But once he’d pulled himself around the stone and torn some of the wet ivy from an inclined side, he saw the worn runes. They covered one complete side of the rock, and were ringed by an oval border, thick with petrified lichen.
