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 recognised 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 never before had seen a hill or mountain that exceeded four thousand feet in height above the dead sea bottoms, and as the ascent was usually gradual, nearly to their summits they presented but few opportunities for the practice of climbing. Nor would the Martians have embraced even such opportunities as might present themselves, for they could always find a circuitous route about the base of any eminence, and these roads they preferred and followed in preference to the shorter but more arduous ways. However, there was nothing else to consider than an attempt to scale the trees contiguous to the cliff in an effort to reach the caves above. The Thark grasped the possibilities and the difficulties of the plan at once, but there was no alternative, and so we set out rapidly for the trees nearest the cliff. Our relentless pursuers were now close to us, so close that it seemed that it would be an utter impossibility for the Jeddak of Thark to reach the forest in advance of them, nor was there any considerable will in the efforts that Tars Tarkas made, for the green men of Barsoom do not relish flight, nor ever before had I seen one fleeing from death in whatsoever form it might have confronted him. But that Tars Tarkas was the bravest of the brave he had proven thousands of times; yes, tens of thousands in countless mortal combats with men and beasts. And so I knew that there was another reason than fear of death behind his flight, as he knew that a greater power than pride or honour spurred me to escape these fierce destroyers. In my case it was love—love of the divine Dejah Thoris; and the cause of the Thark’s great and sudden love of life I could not fathom, for it is oftener that