higher level than the Onyx Cave already described, and is supposed to be
an extension of the same although no connecting passage has been
discovered.

The accompanying friend had not been costumed for caving, but was
persuaded to accept a full suit of overalls, which needed the addition
of a pick and pipe to make the picture perfect. Unfortunately a snap
shot failed.

The entrance is in a perpendicular portion of the cañon wall, but a
narrow path that starts some distance away and appears in eminent danger
of falling off, makes most of the ascent comparatively easy; and the
balance is completed by a short ladder whose rounds dip toward the cañon
bed in a rather alarming manner, but this only proves the folly of
giving too much heed to appearances, for it is strong and firmly
fastened to the rocks.

Just within the entrance there is height sufficient for standing, but
the roof descends suddenly and the walls come near together, reducing
the passage to a crawl, and showing that in past times water poured in
at this opening and not out as might be supposed. The first chamber
entered is the Crystal Gallery, but it is so nearly filled with great
masses of pure white onyx no standing room remains. Drops of water on
portions of the onyx ceiling here are the only moisture remaining in
this cave. When Mac's[5] head came in contact with the roof he called to
the guide: "See here, little boy, you ought to sing out 'low bridge' at
that sort o' places, 'cause when I'm busy hunting a spot to set my foot
in, I can't see what my head's coming to, and I like to mined a lot o'
this rock with it."