"But we have turned about and lost all sense of direction since becoming invisible," said the Shaggy Man. "Since we cannot see the tunnel, it looks the same in every direction, so how are we to know which way to turn to go back?"
"Walk ten steps in one direction and if you are still invisible, then turn about and walk twenty feet in the other direction," instructed the beaver King.
This they all did and after a bit of experimentation and several minor collisions, they were relieved to find themselves visible once more and standing on the edge of the Barrier of Invisibility.
At the King's order, the young beavers had remained where they were, until the others had found their way out of the Barrier. Now the beaver King uttered a series of calls that quickly guided the animals beyond the Barrier of Invisibility.
Shaggy and his friends stood about in the tunnel gazing from one to another, almost despairingly, wondering what to do next.
"There is still hope that we may not have to go back and may be able to use the tunnel to reach Oz, my friends," began the beaver King quietly. "Last night and far into the morning, while you were sleeping, I was busy in my fairy workshop, studying the problem. I believe I have solved it, although, of course, we cannot be quite sure until we make the test."
With this the little animal unstrapped from his back the small bundle he had been carrying. Laying it on the tunnel floor, he carefully unfolded it. The bundle seemed to consist of a number of shimmering pieces of silver cloth, so light they might have been spun from spider webs.