seeming to come from far away. I experienced a queer, indescribable,
little feeling of nervousness. What sort of place was it into which we
had got? I looked at my companion, to see what he thought of the matter;
and noted that there was only puzzlement in his face; and then, as I
watched his features, an expression of comprehension crept over them,
and he nodded his head.

"That's a waterfall," he exclaimed, with conviction. "I know the sound
now." And he began to push vigorously through the bushes, in the
direction of the noise.

As we went forward, the sound became plainer continually, showing that
we were heading straight toward it. Steadily, the roaring grew louder
and nearer, until it appeared, as I remarked to Tonnison, almost to come
from under our feet--and still we were surrounded by the trees
and shrubs.

"Take care!" Tonnison called to me. "Look where you're going." And then,
suddenly, we came out from among the trees, on to a great open space,
where, not six paces in front of us, yawned the mouth of a tremendous
chasm, from the depths of which the noise appeared to rise, along with
the continuous, mistlike spray that we had witnessed from the top of the
distant bank.

For quite a minute we stood in silence, staring in bewilderment at the
sight; then my friend went forward cautiously to the edge of the abyss.
I followed, and, together, we looked down through a boil of spray at a
monster cataract of frothing water that burst, spouting, from the side
of the chasm, nearly a hundred feet below.