advanced toward the ape-man addressing him earnestly as though
endeavoring to convey to him some important information. Presently,
however, they gave it up as an unprofitable job and, resorting to
sign language, conveyed to Tarzan that they were proceeding upon
their way together and were urging him to accompany them.

As the direction they indicated was a route which Tarzan had not
previously traversed he was extremely willing to accede to their
request, as he had determined thoroughly to explore this unknown
land before definitely abandoning search for Lady Jane therein.

For several days their way led through the foothills parallel to the
lofty range towering above. Often were they menaced by the savage
denizens of this remote fastness, and occasionally Tarzan glimpsed
weird forms of gigantic proportions amidst the shadows of the
nights.

On the third day they came upon a large natural cave in the face
of a low cliff at the foot of which tumbled one of the numerous
mountain brooks that watered the plain below and fed the morasses
in the lowlands at the country's edge. Here the three took up their
temporary abode where Tarzan's instruction in the language of his
companions progressed more rapidly than while on the march.

The cave gave evidence of having harbored other manlike forms
in the past. Remnants of a crude, rock fireplace remained and the
walls and ceiling were blackened with the smoke of many fires.
Scratched in the soot, and sometimes deeply into the rock beneath,
were strange hieroglyphics and the outlines of beasts and birds and
reptiles, some of the latter of weird form suggesting the extinct