Somewhere near the river I heard the mournful note of a dove, and it seemed as if the coursing water itself were faintly audible. Half in a dream, I seized and rattled the ancient latch, and finally gave the great sixpanelled door a frank trying. It was unlocked, as I could see in a moment; and though it stuck and grated on its hinges I began to push it open, stepping through it into a vast shadowy hall as I did so.