“I need not say,” said our leader, “that on the occasion of my last visit I exhausted every means of climbing the cliff, and where I failed I do not think that anyone else is likely to succeed, for I am something of a mountaineer. I had none of the appliances of a rock climber with me, but I have taken the precaution to bring them now. With their aid I am positive I could climb that detached pinnacle to the summit; but so long as the main cliff overhangs, it is vain to attempt ascending that. I was hurried upon my last visit by the approach of the rainy season and by the exhaustion of my supplies. These considerations limited my time, and I can only claim that I have surveyed about six miles of the cliff to the east of us, finding no possible way up. What, then, shall we now do?”

“There seems to be only one reasonable course,” said Professor Summerlee. “If you have explored the east, we should travel along the base of the cliff to the west, and seek for a practicable point for our ascent.”