uder.

He rounded an abrupt corner to have the roar suddenly fill his ears, to
see the lane extend straight to a ragged vent, and beyond that, at some
distance, a dark, ragged, bulging wall, like iron. As he hurried forward
he was surprised to find that the noise did not increase. Here it kept
a strange uniformity of tone and volume. The others of the party passed
out of the mouth of Nonnezoshe Boco in advance of Shefford, and when
he reached it they were grouped upon a bank of sand. A dark-red canyon
yawned before them, and through it slid the strangest river Shefford had
ever seen. At first glance he imagined the strangeness consisted of the
dark-red color of the water, but at the second he was not so sure. All
the others, except Nas Ta Bega, eyed the river blankly, as if they did
not know what to think. The roar came from round a huge bulging wall
downstream. Up the canyon, half a mile, at another turn, there was a
leaping rapid of dirty red-white waves and the sound of this, probably,
was drowned in the unseen but nearer rapid.

"This is the Grand Canyon of the Colorado," said Shefford. "We've come
out at the mouth of Nonnezoshe Boco.... And now to wait for Joe Lake!"

They made camp on a dry, level sand-bar under a shelving wall. Nas Ta
Bega collected a pile of driftwood to be used for fire, and then he took
the mustangs back up the side canyon to find grass for them. Lassiter
appeared unusually quiet, and soon passed from weary rest on the sand
to deep slumber. Fay and Jane succumbed to an exhaustion that manifested
itself the moment relaxation set in, and they, too, fell asleep.
Shefford patrolled the long strip of sand under the wall, and watched
up the river for Joe Lake. The Indian returned and went along the river,
climbed over the jutting, sharp slopes that reached into the water, and
passed out of sight up-stream toward the rapid.

Shefford had a sense that the river and the canyon were too magnificent
to be compared with others. Still, all his emotions and sensations had
been so wrought upon, he seemed not to have any left by which he might
judge of what constituted the difference. He would wait. He had a grim
conviction that before he was safely out of this earth-riven crack
he would know. One thing, however, struck him, and it was that up the
canyon, high over the lower walls, hazy and blue, stood other walls,
and beyond and above them, dim in purple distance, upreared still other
walls. The haze and