CHAPTER XVI
THE EASTERN TUNNEL
The next day was Tuesday, the 2d of July—and at six o'clock in the morning we resumed our journey. We still continued to follow the gallery of lava, a perfect natural pathway, as easy of descent as some of those inclined planes which, in very old German houses, serve the purpose of staircases. This went on until seventeen minutes past twelve, the precise instant at which we rejoined Hans, who having been somewhat in advance, had suddenly stopped.
"At last," cried my uncle, "we have reached the end of the shaft."
I looked wonderingly about me. We were in the center of four cross paths—somber and narrow tunnels. The question now arose as to which it was wise to take; and this of itself was no small difficulty. My uncle, who did not wish to appear to have any hesitation about the matter before myself or the guide, at once made up his mind. He pointed quietly to the eastern tunnel; and, without delay, we entered within its gloomy recesses.
Besides, had he entertained any feeling of hesitation it might have been prolonged indefinitely, for there was no indication by which to determine on a choice. It was absolutely necessary to trust to chance and good fortune!
The descent of this obscure and narrow gallery was very gradual and winding. Sometimes we gazed through a succession of arches, its course very like the aisles of a Gothic cathedral. The great artistic sculptors and builders of the middle ages might have here completed their studies with advantage. Many most beautiful and suggestive ideas of architectural beauty would have been discovered by them. After passing through this phase of the cavernous way, we suddenly came, about a mile farther on, upon a square system of arch, such as that adopted by the early Romans, projecting from the solid rock, and keeping up the weight of the roof. Suddenly we would come upon a series of low subterranean tunnels which looked like beaver holes, or the work of foxes. Through these narrow and winding ways we had literally to crawl!
The heat still remained at quite a supportable degree. With an involuntary shudder, I reflected on what the heat
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