inspiring spectacle human eye has never rested upon.
The face of the entire cliff was, as later inspection conclusively proved, so shot with veins and patches of solid gold as to quite present the appearance of a solid wall of that precious metal except where it was broken by outcroppings of ruby, emerald, and diamond boulders—a faint and alluring indication of the vast and unguessable riches which lay deeply buried behind the magnificent surface.
But what caught my most interested attention at the moment that the sun's rays set the cliff's face a-shimmer, was the several black spots which now appeared quite plainly in evidence high across the gorgeous wall close to the forest's top, and extending apparently below and behind the branches.
Almost immediately I recognized them for what they were, the dark openings of caves entering the solid walls—possible avenues of escape or temporary shelter, could we but reach them.
There was but a single way, and that led through the mighty, towering trees upon our right. That I could scale them I knew full well, but Tars Tarkas, with his mighty bulk and enormous weight, would find it a task possibly quite beyond his prowess or his skill, for Martians are at best but poor climbers. Upon the entire surface of that ancient planet I before never had seen a hill or mountain that exceeded four thousand feet in height above the
