The path became steep and rugged, and it was with difficulty that he made his way.
He was evidently ascending the side of a rock, which became more precipitous as he went on.
Where did it lead?
Was it raised above the surface or did it fall short of it?
If so, he would have his trouble for nothing.
He breathed with an effort, and his breath grew shorter and shorter every moment, for he was making a great demand upon his reservoir of air while undergoing strong exertion.
At length he had to stop.
It seemed as if his strength were failing him.
The sleepy feeling overtook him again, and he leaned back against the shining rock, which reflected the sun's rays.
He was face to face with death.