od upon the
Doone-track.

As the road approached the entrance, it became more straight and strong,
like a channel cut from rock, with the water brawling darkly along the
naked side of it. Not a tree or bush was left, to shelter a man from
bullets: all was stern, and stiff, and rugged, as I could not help
perceiving, even through the darkness, and a smell as of churchyard
mould, a sense of being boxed in and cooped, made me long to be out
again.

And here I was, or seemed to be, particularly unlucky; for as I drew
near the very entrance, lightly of foot and warily, the moon (which had
often been my friend) like an enemy broke upon me, topping the eastward
ridge of rock, and filling all the open spaces with the play of wavering
light. I shrank back into the shadowy quarter on the right side of the
road; and gloomily employed myself to watch the triple entrance, on
which the moonlight fell askew.

All across and before the three rude and beetling archways hung a
felled oak overhead, black, and thick, and threatening. This, as I heard
before, could be let fall in a moment, so as to crush a score of men,
and bar the approach of horses. Behind this tree, the rocky mouth was
spanned, as by a gallery with brushwood and piled timber, all upon a
ledge of stone, where thirty men might lurk unseen, and fire at any
invader. From that rampart it would be impossible to dislodge them,
because the rock fell sheer below them twenty feet, or it may be more;
while overhead it towered three hundred, and so jutted over that nothing
could be cast upon them; even if a man could climb the height. And
the access to this portcullis place--if I may so call it, being no
portcullis there--was through certain rocky chambers known to the
tenants only.

But the cleverest of their devices, and the most puzzling to an enemy,
was that, instead of one mouth only, there were three to choose from,
with nothing to betoken which was the proper access; all being pretty
much alike, and all unfenced and yawning. And the common rumour was
that in times of any danger, when any force was known to be on muster in
their neighbourhood, they changed their entrance every day, and diverted
the other two, by means of sliding doors to the chasms and dark abysses.

Now I could see those three rough arches, jagged, black, and terrible;
and I knew that only one of them could lead me to the valley; neither
gave the river now any further guidance; but dived underground wit