I heard my own frequent, trembling breaths. (I am not ashamed to confess this, it was all unexpected and incomprehensible.) A minute, two, three passed; I was still going down. Then a soft bump. The thing that had been falling away from under my feet was motionless. I found in the darkness a knob, and turned it; a door opened; there was a dim light. I now noticed behind me a square platform, travelling upward. I tried to run back to it but it was too late. “I am cut off here,” I thought. Where “here” might be, I did not know.

A corridor. A heavy silence. The small lamps on the vaulted ceiling resembled an endless, twinkling, dotted line. The corridor was similar to the “tube” of our underground railways but it was much narrower, and made not of our glass but of some other, very ancient material. For a moment I thought of the underground caves where they say many tried to save themselves during the Two Hundred Years’ War. There was nothing to do but to walk ahead.