The light illumined the cavern, casting a ruddy glare on the rocks and the rippling water. It was a weird and uncanny scene, and he shivered involuntarily. He would have given a good deal to have been in the outer world once more. Allen saw that the river had simply widened at the spot, and that a hundred yards further on it flowed into a narrow channel, as before. Only on the side which he occupied was there anything in the shape of a shore. Opposite the rocks stood straight up, and were covered with moss and slime.
"If I am to get out, it must be from this shore upward," Allen thought as he surveyed the situation. "I can never get back on the river. One could never row even a boat against that current."
The shore was not more than thirty or forty feet wide. It was backed up by rocks, but Allen was glad to see that they did not present an un broken surface. There were numerous fissures, and in one place the opening was a dozen feet in width.
Selecting the brightest of the firebrands Allen, left the vicinity of the stream and started to explore this opening. He was in great hopes that
