A dozen leaps and I reached the wall of rock beyond which all retreat was cut off. Close at hand was an outjutting buttress, and thinking that back of this I might hide and thus prolong my life, I raced for it.

Panting, unseeing, I reached the projection, ducked behind it, and to my amazement and unspeakable delight, found myself in a narrow canyon or defile, like a huge cleft in the face of the precipice.

Here was safety for a time. The terrible man-eating trees could not enter, and striving only to put a greater distance between myself and the vegetable demons I never slackened my pace as I turned and sped up the canyon.

Narrower and narrower it became. Far above my head the rocky walls leaned inward, shutting out the light until soon it was so dim and shadowy that, through sheer necessity, I was forced to stop running and to pick my way carefully over the masses of rock that strewed the canyon’s floor. Presently only a narrow ribbon of sky was visible between the towering walls of the pass. Then this was blotted out and I found myself in the inky blackness of a tunnel—an ancient watercourse—leading into the very bowels of the mountain.

But there was no use in hesitating. Anything was preferable to the cannibal trees, and groping my way I pressed on. Winding and twisting, turning sharply, the passageway led, ever ascending steeply and taxing my exhausted muscles and overwrought system to the utmost. Then, far ahead, I heard the faint sound of dripping, falling water and with joy at thought of burying my aching head in the cold liquid, and of easing my parched, dry throat, I hurried, stumbling, through the tunnel.

At last, I saw a glimmer of light in the distance and in it the sparkle of the water. Before me was the end of the tunnel and sunlight and with a final spurt of speed I rushed towards it. Then, just as I gained the opening, and so suddenly and unexpectedly that he seemed to materialize from thin air, a man rose before me.

Unable to check my speed, too thunderstruck at the apparition to halt, I dashed full into him and together we rolled head over heels upon the ground.

I have said he was a man. But even in that brief second that I glimpsed him, before I bowled him over, I realized that he was unlike any man I or anyone else had ever seen. Barely three feet in height, squat, with enormous head and shoulders, he stood shakily upon the tiniest of bandy legs and half supported his weight by his enormously long muscular arms. Had it not been that he was partly clothed and that his face was hairless, I should have thought him an ape. And now, as I picked myself up and stared at him, my jaws gaped in utter amazement. The fellow was running from me at top speed upon his hands, his feet waving and swaying in the air!

So utterly dumbfounded was I at the sight that I stood there silently gazing after the strange being until he vanished behind a clump of bushes. Then as it dawned upon me that no doubt there were others near, and, that as he had shown no sign of hostility, they were likely peaceable, I hurried after him.

A narrow trail led through the brush and running along this I burst from the shrubbery and came to an abrupt halt, utterly astounded at the sight which met my eyes. I was standing at the verge of a little rise beyond which stretched an almost circular, level plain several miles in diameter. Massed upon this in long rows, compact groups and huge squares, were hundreds of low, flat-roofed, stone buildings, while upon a smooth green plot at a little distance, stood a massive truncated pyramid.