I was interested in the question as one is always interested
in a riddle; but I tossed it from my mind, promising myself a
solution on the morrow, and gave my attention to the vagaries of
nature about me.
We were passing through a cleft between two massive rocks,
some three or four hundred yards in length. Ahead of us, at the
end of the passage, a like boulder fronted us.
Our footfalls echoed and reechoed from wall to wall; the only
other sound was the eery moaning of the wind that reached our ears
with a faintness which only served to increase its effect. Here
and there were apertures large enough to admit the entrance of a
horse and rider, and in many places the sides were crumbling.
I was reflecting, I remember, that the formation was
undoubtedly one of limestone, with here and there a layer of
quartzite, when I was aroused by a shout from Harry.
I approached. Harry and Desiree, with Felipe, the
arriero, had halted and were gazing upward at the wall of
rock which barred the exit from the passage. Following their eyes,
I saw lines carved on the rock, evidently a rude and clumsy attempt
to reproduce the form of some animal.
The thing was some forty feet or so above us and difficult to
see clearly.
"I say it's a llama," Harry was saying as I stopped at his
side.
"My dear boy," returned Desiree, "don't you think I know a
horse when I see one?"
"When you see one, of course," said Harry sarcastically. "But
who ever saw a horse with a neck like that?"
As for me, I was really interested, and I turned to the
arriero for information.
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