
All during the trip Billings had steadfastly evaded questions as to how we were to enter Caspak after we had found Caprona. Bowen Tyler's manuscript had made it perfectly evident to all that the subterranean outlet of the Caspakian River was the only means of ingress or egress to the crater world beyond the impregnable cliffs. Tyler 's party had been able to navigate this channel because their craft had been a submarine; but the Toreador could as easily have flown over the cliffs as sailed under them. Jimmy Hollis and Colin Short whiled away many an hour inventing schemes for surmounting the obstacle presented by the barrier cliffs, and making ridiculous wagers as to which one Tom Billings had in mind; but immediately we were all assured that we had raised Caprona, Billings called us together.
"There was no use in talking about these things," he said, "until we found the island. At best it can be but conjecture on our part until we have been able to scrutinize the coast closely. Each of us has formed a mental picture of the Capronian seacoast from Bowen's manuscript, and it is not likely that any two of these pictures resemble each other, or that any of them resemble the coast as we shall presently find it. I have in view three plans for scaling the cliffs, and the means for carrying out each is in the hold. There is an electric drill with plenty of waterproof cable to reach from the ship's dynamos to the cliff-top when the Toreador is anchored at a safe distance from shore, and there is sufficient half-inch iron rod to build a ladder from the base to the top of the cliff. It would be a long, arduous and dangerous work to bore the holes and insert the rungs of the ladder from the bottom upward; yet it can be done.
