Reaching the entrance they began to mount the stone stairs. They went up ten stairs and then down five stairs, following a passage cut from the rock. The stairs were just wide enough for the two girls to walk abreast, arm in arm. At the bottom of the five stairs the passage turned to the right, and they ascended ten more stairs, only to find at the top of the flight five stairs leading straight down again. Again the passage turned abruptly, this time to the left, and ten more stairs led upward.
The passage was now quite dark, for they were in the heart of the mountain and all daylight had been shut out by the turns of the passage. However, Ozma drew her silver wand from her bosom and the great jewel at its end gave out a lustrous, green-tinted light which lighted the place well enough for them to see their way plainly.
Ten steps up, five steps down, and a turn, this way or that. That was the program, and Dorothy figured that they were only gaining five stairs upward each trip that they made.
"Those Flatheads must be funny people," she said to Ozma. "They don't seem to do anything in a bold straightforward manner. In making this passage they forced everyone to walk three times as far as is necessary. And of course this trip is just as tiresome to the Flatheads as it is to other folks."
"That is true," answered Ozma; "yet it is a clever arrangement to prevent their being surprised by intruders. Every time we reach the tenth step of a flight, the pressure of our feet on the stone makes a bell ring on top of the mountain, to warn the Flatheads of our coming."
"How do you know that?" demanded Dorothy, astonished.
"I've heard the bell ever since we started," Ozma told her. "You could not hear it, I know, but when I am holding my wand in my hand I can hear sounds a great distance off."
"Do you hear anything on top of the mountain 'cept the bell?" inquired Dorothy.
"Yes. The people are calling to one another in alarm and many footsteps are approaching the place where we will reach the flat top of the mountain."
This made Dorothy feel somewhat anxious. "I'd thought we were going to visit just common, ordinary people," she remarked, "but they're pretty clever, it seems, and they know some kinds of magic, too. They may be dangerous, Ozma. P'raps we'd better stayed at home."