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 it upwards, and to divide the details each from the others, the blue light would go out and the mystery would remain. Another blue light would be made to burn; but bats would come flitting through, disturbing all investigation;—and the mystery would still remain.

There were various of these halls or chambers, all opening one to another by passages here and there, so that the visitor who is never compelled to travel far, might suppose them all to be parts of one huge dark mansion underground. But in each hall there were receding closets, guarded by jutting walls of stalactite breast high, round which however on closer search, a way would be found,—as though these might be the private rooms in which the ghouls would hide themselves when thus disturbed by footsteps and voices, by candles and blue lights from above. I was always thinking that I should come upon a ghoul; but there were inner chambers still into which they crept, and whither I could not follow them.

Careful walking is necessary, as the ground is uneven; and there are places in which the ghouls keep their supply of water,—stone troughs wonderfully and beautifully made. But except in one place there is no real difficulty in moving about, when once the visitor to the Caves has descended into them. At this place the ascent is perplexing, because the ground is both steep and slippery. I can imagine that a lady or an old man might find it difficult to be dragged up. Such lady or old man should either remain below or allow his companions to drag him up. There is very little stooping necessary anywhere. But it has to be borne in mind