Your schooner hit rocks further along the beach after a bad storm and your crew were washed up onto a deserted shoreline, surrounded by boulders and trees. In the distance a huge building rising several stories above the tree line can faintly be made out. And at first, the crew are at a loss to see any exit off the beach or any way to reach the building, but soon your Minotaur spots a hidden trapdoor in the shallow tide coming onto the shore. Sadly, even with his impressive strength, the trapdoor could not be prised open!  The following morning your Sorcerer finds that in one corner of the rocky beach wall, a person can pass through the apparently stony barrier! Through the rock face he finds a stairway down, to flooded dungeon passages of mystery and horror. Eerie skeleton archers patrolling the passages, fire arrows of death at anything that comes near.