was eventually the means of our salvation.
When we reached the opening at the top Tars Tarkas drew to one side
that I might pass out and investigate, as, owing to my lesser weight
and greater agility, I was better fitted for the perilous threading of
this dizzy, hanging pathway.
The limb upon which I found myself ascended at a slight angle toward
the cliff, and as I followed it I found that it terminated a few feet
above a narrow ledge which protruded from the cliff’s face at the
entrance to a narrow cave.
As I approached the slightly more slender extremity of the branch it
bent beneath my weight until, as I balanced perilously upon its outer
tip, it swayed gently on a level with the ledge at a distance of a
couple of feet.
Five hundred feet below me lay the vivid scarlet carpet of the valley;
nearly five thousand feet above towered the mighty, gleaming face of
the gorgeous cliffs.
The cave that I faced was not one of those that I had seen from the
ground, and which lay much higher, possibly a thousand feet. But so
far as I might know it was as good for our purpose as another, and so I
returned to the tree for Tars Tarkas.
Together we wormed our way along the waving pathway, but when we
reached the end of the branch we found that our combined weight so
depressed the limb that the cave’s mouth was now too far above us to be
reached.
We finally agreed that Tars Tarkas should return along the branch,
leaving his longest leather harness strap with me, and that when the
limb had risen to a height that would permit me to enter the cave I was
to do so, and on Tars Tarkas’ return I could then lower the strap and
haul him up to the safety of the ledge.
This we did without mishap and soon found ourselves together upon the
verge of a dizzy little balcony, with a magnificent view of the valley
spreading out below us.
As far as the eye could reach gorgeous forest and crimson sward skirted
a silent sea, and about all towered the brilliant monster guardian
cliffs. Once we thought we discerned a gilded minaret gleaming in the
sun amidst the waving tops of far-distant trees, but we soon abandoned
the idea in the belief that it was but an hallucination born of our
great desire to discover the haunts of civilized men in this beautiful,
yet forbidding, spot.
Below us upon the river’s bank the great white apes were devouring the
last remnants of Tars Tarkas’ former companions, while great herds of
plant men grazed in ever-widening circles about the sward which they
kept as close clipped as the smoothest of lawns.
Knowing that attack from the tree was now improbable, we determined to
explore the cave, which we had every reason to believe was but a
continuation of the path we had already traversed, leading the gods
alone knew where, but quite evidently away from this valley of grim
ferocity.
As we advanced we found a well-proportioned tunnel cut from the solid
cliff. Its walls rose some twenty feet above the floor, which was
about five feet in width. The roof was arched. We had no means of
making a light, and so groped our way slowly into the ever-increasing
darkness, Tars Tarkas keeping in touch with one wall while I felt along
the other, while, to prevent our wandering into diverging branches and
becoming separated or lost in some intricate and labyrinthine maze, we
clasped hands.
How far we traversed the tunnel in this manner I do not know, but
presently we came to an obstruction which blocked our further progress.
It seemed more like a partition than a sudden ending of the cave, for
it was constructed not of the material of the cliff, but of something
which felt like very hard wood.
Silently I groped over its surface with my hands, and presently was
rewarded by the feel of the button which as commonly denotes a door on
Mars as does a door knob on Earth.
Gently pressing it, I had the satisfaction of feeling the door slowly
give before me, and in another instant we were looking into a dimly
lighted apartment, which, so far