Hall of Infinite Doors

Beyond the door, you find yourself in a damp cave filled with rock pools. You are, however, on a high ledge with nothing to do up there except enter the door. How to escape this fate? There's a long strand of seaweed ahead. You could leap on it then climb down it. There's also a rock pool below. You could jump down into it. Or you could just climb down the ledge. If that's all too scary... there's the door.