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and to continue to glow as long as it was in operation. The only sound it gave off was a hum or buzz that sounded like a battery charger in operation.  

   The seat in the front was very wide. The only method of operation was a black tear-shaped object which hung from the panel by a chain. One of these

men sitting in the middle, took this thing and touched the sharp end to the first figure on the left side of the dial.

   When he touched the first figure, the contraption seemed to move almost out from under us. But it was the smoothest and quietest take-off I ever experienced. We seemed to float. Not the slightest sound or vibration. And after we had traveled for a minute he touched the next figure on the dial and our speed increased at an alarming rate. But when he had advanced the black object over past the center of the dial, our speed increased until I could hardly breathe. I can't begin to estimate the distance we had traveled or our speed, but it was terrific. The two horseshoe objects in the rear created a green light that somehow shone far ahead of us lighting up the cavern for a long way. I soon noticed a black line running down the center of the cavern and our inner-mountain taxi seemed to follow that.

   I don't know how long we continued our mad ride, but it was long enough for us to become used to the terrific speed and we had just about overcome our fear of some kind of a wreck when we were thrown into another spasm of fear.

   Another machine of the same type was approaching us head on.  I could see our captors were very nervous, but our speed continued. As the other machine became closer, our speed slowed down very fast and we came to a smooth stop about two feet from the front of the other machine.

   Our machine had no sooner stopped than our