"It was enough. There was an answering warble from far off in the woodland, then a sudden flutter of swift crimson wings among the near-by branches. In another second a beautiful Red Bird came sailing down the dark glen and, greatly to the surprise of the two children, lighted upon one of 'Aunt Twaddles'' shoulders where it began to sing a most beautiful song.
"In the excitement of the moment, Arthur dropped the handful of withered flowers he had gathered for his little sister, and with hands half raised, shouted for her to turn quickly that she might behold the wonderful bird; but the startling cry of the boy was hushed as he beheld the Red Bird drop from its slender claw a bright golden key into the outstretched hand of 'Aunt Twaddles', and then sail away into the woodland.
"'Aunt Twaddles' stepped toward the cliff and, turning to the surprised children, she waved the golden key in the air, as she said in her usually kind way.
"'Now, children, listen. I know the old one-legged miser who keeps the Inn at the Ferry and have known him ever since he was an ill-tempered boy who respected not the will of his parents. I knew your brave father, too, let me say, many years before he marched gallantly away to the war from which he never returned. Often have I given your sweet mother a bite of my candy, long, long before she went to live with the angels. And now, for the love of yourselves, as well as for the memory and respect that I bear your dear, dead parents, I am going to give you that moment of peace and joy that the cross old miser so begrudges you down at the Inn.'
"With that she faced the mountain and placed the golden key in a deep crevice of the rock, at the same time repeating some strange and mysterious words.
"There was a deep, rumbling roar within, that sounded like the angry roll of distant thunder and greatly frightened the children; when, with a tearing crash, the tall mountain parted at the centre.
"Pieces of bursting rock went flying through the air in every direction.
"Great columns of smoke rose upward and spread over the entire sky like a mighty cloud.
"The severed cliff rolled away to the side and there before them stood the entrance to a deep, dark cave that looked gloomy and filled with danger.
"At first, little Arthur and Maud drew back in affright and stood ready to fly up the glen for their lives; but 'Aunt Twaddles,' turning toward them, exclaimed in calm, easy tones: