Queen Zixi of IX by L. Frank Baum — Read

I have already mentioned how high the mountains were between Noland and the land of Ix; but at the north of the city of Nole were mountains much higher -- so high, indeed, that they seemed to pierce the clouds, and it was said the moon often stopped on the highest peak to rest. It was not one single slope up from the lowlands; but first there was a high mountain, with a level plain at the top; and then another high mountain, rising from the level and capped with a second plain; and then another mountain, and so on; which made them somewhat resemble a pair of stairs. So that the people of Nole, who looked upon the North Mountains with much pride, used to point them out as "The Giant's Stairway," forgetting that no giant was ever big enough to use such an immense flight of stairs.

Many people had climbed the first mountain, and upon the plain at its top flocks of sheep were fed; and two or three people boasted they had climbed the second steep; but beyond that the mountains were all unknown to the dwellers in the valley of Noland. As a matter of fact, no one lived upon them; they were inhabited only by a few small animals and an occasional vulture or eagle which nested in some rugged crag.