There came sometimes, however, mysterious noises, as though the fairy folks were playing pipes in the stony knolls, of which they had both heard often enough. And also by whiles they heard a thing far more awful—a plunge as of a great sea-beast sinking suddenly into deep water.
"Suppose that it is some sea-monster," said Anna with eyes on fire; for the unwonted darkness had changed her, so that she took readily enough her orders from the less imaginative boy—whereas, under the broad light of day, she never dreamed of doing other than giving them.
Once they had a narrow escape. It happened that Simeon was leading and holding Anna by the hand, for they had been steadily climbing upwards for some time. The footing of the cave was of smooth sand, very restful and pleasing to the feet. Simeon was holding up the candle and looking before him, when suddenly his foot went down into nothing. He would have fallen forward, but that Anna, putting all her force into the pull, drew him back. The candle, however, fell from his hand and rolled unharmed to the edge of a well, where it lay still burning.
Simeon seized it, and the two children, kneeling upon the rocky side, looked over into a deep hole, which seemed, so far as the taper would throw its feeble rays downwards, to be quite fathomless.
But at the bottom something rose and fell with a deep roaring sound, as regular as a beast breathing. It had a most terrifying effect to hear that measured roaring deep in the bowels of the earth, and at each respiration to see the suck of the air blow the candle-flame about.
Anna would willingly have gone back, but stout Simeon was resolved and not to be spoken to.
They circled cautiously about the well, and immediately began to descend. The way now lay over rock, fine and regular to the feet as though it had been built and polished by the pyramid-builders of Egypt. There was more air, also, and the cave seemed to be opening out.
At last they came to a glimmer of daylight and a deep and solemn pool. There was a path high above it, and the pool lay beneath black like ink. But they were evidently approaching the sea, for the roar of the breaking swell could distinctly be heard. The pool narrowed till there appeared to be only a round basin of rock, full of the purest water, and beyond a narrow bank of gravel. Then they saw the eye of the sea shining in, and the edge of a white breaker lashing into the mouth of the cave.
But as they ran down heedlessly, all unawares they came upon a sight which made them shrink back with astonishment. It was something antique and wrinkled that sat or stood, it was difficult to tell which, in the pool of crystal water. It was like a little old man with enormous white eyebrows, wearing a stupendous mask shaped like a beak. The thing turned its head and looked intently at them without moving. Then they saw it was a bird, very large in size, but so forlorn, old, and broken that it could only flutter piteously its little flippers of wings and patiently and pathetically waggle that strange head.
"It is the Great Auk itself—we have found it!" said Anna in a hushed whisper.